Cites del registre

Cita APA (7th ed.)
Keeton, W. T. (1980). Biological science (3d ed.). Norton.
Cita Chicago (17th ed.)
Keeton, William T. Biological Science. 3d ed. New York: Norton, 1980.
Cita MLA (9th ed.)
Keeton, William T. Biological Science. 3d ed. Norton, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.