Cita APA (7th ed.)

Johnson & George B. (1997). The Living World. Wm. C. Brown Publishers.

Cita Chicago (17th ed.)

Johnson i George B. The Living World. Dubuque, IA: Wm. C. Brown Publishers, 1997.

Cita MLA (9th ed.)

Johnson i George B. The Living World. Wm. C. Brown Publishers, 1997.