Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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