APA (7th ed.) Citation

Downs, R. B., & Keller, C. D. (1975). How to do library research (2d ed.). University of Illinois Press.

Chicago Style (17th ed.) Citation

Downs, Robert Bingham, and Clara D. Keller. How to Do Library Research. 2d ed. Urbana: University of Illinois Press, 1975.

MLA (8th ed.) Citation

Downs, Robert Bingham, and Clara D. Keller. How to Do Library Research. 2d ed. University of Illinois Press, 1975.