APA Citation

Mathews, B. S., & Mathews, B. S. Gray literature: Resources for locating unpublished research.

Chicago Style Citation

Mathews, Brian S., and Brian S. Mathews. Gray Literature: Resources for Locating Unpublished Research.

MLA Citation

Mathews, Brian S., and Brian S. Mathews. Gray Literature: Resources for Locating Unpublished Research.

Warning: These citations may not always be 100% accurate.