APA (7th ed.) Citation

Johnson, W. H. (1977). Principles of zoology (2d ed.). Holt Rinehart and Winsoton.

Chicago Style (17th ed.) Citation

Johnson, Willis Hugh. Principles of Zoology. 2d ed. New York: Holt Rinehart and Winsoton, 1977.

MLA (9th ed.) Citation

Johnson, Willis Hugh. Principles of Zoology. 2d ed. Holt Rinehart and Winsoton, 1977.