APA (7th ed.) Citation

Mayr, E. (1969). Principles of systematic zoology. McGraw-Hill.

Chicago Style (17th ed.) Citation

Mayr, Ernst. Principles of Systematic Zoology. New York: McGraw-Hill, 1969.

MLA (9th ed.) Citation

Mayr, Ernst. Principles of Systematic Zoology. McGraw-Hill, 1969.