Volpe & E. Peter. (1993). Biology and Human Concerns (4th ed.). Wm. C. Brown Publishers.
Citazione stile Chigago Style (17a edizione)Volpe e E. Peter. Biology and Human Concerns. 4th ed. Dubuque, IA: Wm. C. Brown Publishers, 1993.
Citatione MLA (9a ed.)Volpe e E. Peter. Biology and Human Concerns. 4th ed. Wm. C. Brown Publishers, 1993.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.