APA (7e ed.) Bronvermelding

Johnson, G. B. (2010). Essentials of the living world (Third edition.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Johnson, George B. Essentials of the Living World. Third edition. Dubuque, IA: McGraw-Hill, 2010.

MLA (9e ed.) Bronvermelding

Johnson, George B. Essentials of the Living World. Third edition. McGraw-Hill, 2010.