Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Nelson, Gideon E.. Biological Principles with Human Perspectives. New York [i pozostałe]: John Wiley & Sons, 1980.

Cita MLA (9a ed.)

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