Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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