APA (7th ed.) Citation

St. George, J. (1989). Panama canal: Gateway to the world. Putnam.

Chicago Style (17th ed.) Citation

St. George, Judith. Panama Canal: Gateway to the World. New York: Putnam, 1989.

MLA (9th ed.) Citation

St. George, Judith. Panama Canal: Gateway to the World. Putnam, 1989.

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