APA Citatie

Heiss, E. D., Ard, & Lape, R. (1961). Biology: A basic science (2nd ed.).

Chicago Style citaat

Heiss, Elwood D., Ard, en Rich Lape. Biology: A Basic Science. 2nd ed. 1961.

MLA citatie

Heiss, Elwood D., et al. Biology: A Basic Science. 2nd ed. 1961.