APA (7th ed.) Citation

Herrmann, P., & Pomerans, A. J. (1958). The great age of discovery. Harper.

Chicago Style (17th ed.) Citation

Herrmann, Paul, and Arnold J. Pomerans. The Great Age of Discovery. New York: Harper, 1958.

MLA (9th ed.) Citation

Herrmann, Paul, and Arnold J. Pomerans. The Great Age of Discovery. Harper, 1958.