APA aipamena

Hall, R. P. (1964). Protozoa: The simplest of all animals.

Chicago Style aipamena

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

MLA aipamena

Hall, Richard P. Protozoa: The Simplest of All Animals. 1964.