Cita APA (7th ed.)

Rippy, J. F. (1940). The Caribbean danger zone. G.P. Putnam's Sons.

Cita Chicago (17th ed.)

Rippy, J. Fred. The Caribbean Danger Zone. New York: G.P. Putnam's Sons, 1940.

Cita MLA (8th ed.)

Rippy, J. Fred. The Caribbean Danger Zone. G.P. Putnam's Sons, 1940.