APA ציטוט

Keeton, W. T. (1972). Elements of biological science (2nd ed.). W.W. Norton.

Chicago Style (17th ed.) Citation

Keeton, William T. Elements of Biological Science. 2nd ed. New York: W.W. Norton, 1972.

ציטוט MLA

Keeton, William T. Elements of Biological Science. 2nd ed. W.W. Norton, 1972.