Cita APA (7th ed.)

Nelson, G. E. (1980). Biological principles with human perspectives. Wiley.

Cita Chicago (17th ed.)

Nelson, Gideon E. Biological Principles with Human Perspectives. New York: Wiley, 1980.

Cita MLA (9th ed.)

Nelson, Gideon E. Biological Principles with Human Perspectives. Wiley, 1980.