APA (7th ed.) Citation

Rippy, J. F. (1940). The Caribbean danger zone. Putnam.

Chicago Style (17th ed.) Citation

Rippy, James Fred. The Caribbean Danger Zone. New York: Putnam, 1940.

MLA (9th ed.) Citation

Rippy, James Fred. The Caribbean Danger Zone. Putnam, 1940.

Warning: These citations may not always be 100% accurate.