Encyclopedias, Dictionaries, Handbooks
Scholarly Journals, Theses, and Dissertations
Newspapers, Trade Journals, and Popular Magazines
Blogs, Wikis, and Websites
Secondary sources describe or analyze or report on primary sources. Although these terms are relative, the following examples might be helpful:
Primary sources can be letters, research results, works of art, speeches, patents, and original manuscripts and documents.
Secondary sources can be encyclopedia entries, book reviews, news articles, and reports.