APA (7th ed.) Citation

Jahn, T. L., Bovee, E. C., & Jahn, F. F. (1979). How to know the protozoa (2d ed.). W. C. Brown Co..

Chicago Style (17th ed.) Citation

Jahn, Theodore Louis, Eugene C. Bovee, and Frances Floed Jahn. How to Know the Protozoa. 2d ed. Dubuque, Iowa: W. C. Brown Co., 1979.

MLA (9th ed.) Citation

Jahn, Theodore Louis, et al. How to Know the Protozoa. 2d ed. W. C. Brown Co., 1979.