Citazione Stile APA (7a Edizione)

Simpson, G. G., & Beck, W. S. (1965). Life: An introduction to biology (2nd ed.). National Book Store.

Citazione stile Chigago Style (17a edizione)

Simpson, George Gaylord, e William S. Beck. Life: An Introduction to Biology. 2nd ed. [Manila]: National Book Store, 1965.

Citatione MLA (9a ed.)

Simpson, George Gaylord, e William S. Beck. Life: An Introduction to Biology. 2nd ed. National Book Store, 1965.