Dictionaries:
Spanish-English Dictionary by Provides equivalents in the Spanish spoken in both Spain and Latin America for a hundred thousand words and expressions in American English, along with numerals, symbols, abbreviations, cultural tips, and guides to Spanish and English grammar.
Oxford-Hachette French Dictionary by A book that lists French language words and gives their equivalent in English, and English language words with their equivalent in French.
Nouveau Petit Robert Dictionnaire de la Langue Francaise by 
Oxford German Dictionary by "The Oxford German Dictionary provides authoritative coverage of German and English with over 320,000 words and phrases, and 520,000 translations. Essential grammatical information and language usage notes are provided for both languages. This edition of the Oxford German Dictionary includes cultural notes, providing interesting and helpful information on life in the German- and English-speaking world. In addition, there are boxed notes offering help with language usage and construction, and a centre section covering essential correspondence with sample letters, emails, CVs and résumés, and sections on using the telephone and writing text messages. The colour design and ultra-clear layout make it even easier to find the translation you are looking for. It is an essential reference tool for all serious students of German."--Publisher's description.Online Aids
Browse these LC class numbers in the Music Reference Section to find opera libretti wtih IPA transcriptions:
ML48-ML50
(N.B., many of these volumes are in MUSIC REFERENCE; these are noted below.)
Italian Belcanto Opera Libretti by The Complete Puccini Libretti by The Complete Verdi Libretti in Four Volumes by Four Strauss Opera Libretti by French Opera Libretti by German Miscellaneous Opera Libretti by Gluck & Monteverdi Opera Libretti by Handel Opera Libretti by Italian Verismo Opera Libretti by 
The Libretti of Mozart's Completed Operas by Libretti of Russian Operas by Der Ring des Nibelungen (The Ring of the Nibelung) by Three Wagner Opera Libretti by Butler Libraries' subscription-based database to diction and translations of music pieces. Start your research with this!
Diction for Singers: A Concise Reference for English, Italian, Latin, German, French, and Spanish Pronunciation by 
Diction in Context by "Diction in Context is a unique and highly practical textbook for singers learning to sing in English, Italian, German, and French. Each chapter is designed for use in diction courses in academic music and voice programs, helping students learn through pronunciation, articulation, enunciation, punctuation, and cultural context in each language. Students and teachers of singing will benefit from the text's pertinent biographical, historical and literary sources along with diction rules and textual examples of English, Italian, German and French song. For each language, there is a section on sentence structure and syntax intended to assist readers with poetic analysis and word-by-word translations. Representative song texts are provided for the purpose of comparative listening and phonetic transcription. Comparative listening reveals subtle differences in expression and diction. In addition, the texts are presented in a workbook format, allowing space for IPA dictation practice"-- Provided by publisher.
Diction: Italian, Latin, French, German: The Sounds and 81 Exercises for Singing Them by 
A Handbook of Diction for Singers: Italian, German, French by 
Phonetic Readings of Songs and Arias by 
A Singer's Manual of Foreign Language Dictions by 
Singing Early Music: The Pronunciation of European Languages in the Late Middle Ages and Renaissance by 
Singing in Czech: A Guide to Czech Lyric Diction and Vocal Repertoire by 
How to Sing American: Pronunciation for Jazz, Rock, R&B and Other Non-Classical Singers by 
The Singer's Manual of English Diction by 
Singing and Communicating in English: A Singer's Guide to English DIction by 
To Sing in English: A Guide to Improved Diction by 
Dictionnaire alphabétique et analogique de la langue française by 
Dictionnaire de la prononciation française dans sa norme actuelle by French Opera Libretti by 
The Interpretation of French Song by 
Interpreting the Songs of Gabriel Fauré by 
Interpreting the Songs of Jacques Leguerney: A Guide for Study and Performance by 
Interpreting the Songs of Maurice Ravel by Oxford-Hachette French Dictionary by 
The Poetic Debussy: A Collection of his Song Texts and Selected Letters by 
The Singer's Manual of German and French Diction by 
Singing in French: A Manual of French Diction and French Vocal Repertoire by 
Translations of 106 French Poems Set to Music by French Composers by Das Aussprachewoerterbuch der deutschen Sprache by 
German for Musicians by 
German for Singers: A Textbook of Diction and Phonetics by German Miscellaneous Opera Libretti by 
Hugo Wolf's Complete Song Texts In One Volume by Phonetic Readings of Brahms Lieder by Selected Song Texts of Great German Lieder by 
Schubert's Complete Song Texts by 
Schumann's Complete Song Texts in One Volume by The Singer's Manual of German and French Diction by The Songs of Max Reger by Handel Opera Libretti by Italian Belcanto Opera Libretti by 
Italian Song Texts from the 17th Through the 20th Centuries by 
Singers' Italian: A Manual of Diction and Phonetics by 
Oxford Paravia Italian Dictionary by Italian Art Song Series by 
Singer's Manual of Latin Diction and Phonetics by 
Translations and Annotations of Choral Repertoire by 
Russian Songs and Arias: Phonetic Readings, Word-by-Word Translations, and a Concise Guide to Russian Diction by 
Selected Nineteenth Century Russian Song Texts by 
The Singer's Rachmaninoff by 
Tchaikovsky's Complete Song Texts by Tchaikovsky's Complete Songs: A Companion with Texts and Translations by 
The Singer's Anthology of 20th Century Spanish Songs by 
A Singer's Guide to the Songs of Joaquín Rodrigo by 
A Singer's Manual of Spanish Lyric Diction by Email Butler University Libraries
Irwin Library: 317-940-9227
Science Library: 317-940-9937
CAT: 317-940-8575
