Quantitative - information collected and numerically represented
Qualitative - information collected by observation & interpretive approaches
Source: Accredited in Public Relations presentation.
Trade publication/media articles - “How to do it well”, “This is how we did it” articles written by practitioners
Commercial Research - Research conducted by commercial companies. Businesses purchase this research to gain a competitive edge in their market areas.
Examples of commercial research companies:
"Grey Literature are materials and research produced by organizations outside of the traditional commercial or academic publishing distribution channels." Grey Literature includes:
Producers of Grey Literature include:
Wikipedia contributors. (2018, April 22). Grey literature. In Wikipedia, The Free Encyclopedia. Retrieved 12:19, September 9, 2018, from https://en.wikipedia.org/w/index.php?title=Grey_literature&oldid=837672993