APA (7th ed.) Citation

Hall, R. P. (1964). Protozoa: The simplest of all animals. Holt Rinehart and Winston.

Chicago Style (17th ed.) Citation

Hall, Richard P. Protozoa: The Simplest of All Animals. New York: Holt Rinehart and Winston, 1964.

MLA (9th ed.) Citation

Hall, Richard P. Protozoa: The Simplest of All Animals. Holt Rinehart and Winston, 1964.