APA (7th ed.) Citation

Zweig, S., Paul, E., & Paul, C. (1938). Conqueror of the seas: The story of Magellan. The Viking press.

Chicago Style (17th ed.) Citation

Zweig, Stefan, Eden Paul, and Cedar Paul. Conqueror of the Seas: The Story of Magellan. New York: The Viking press, 1938.

MLA (9th ed.) Citation

Zweig, Stefan, et al. Conqueror of the Seas: The Story of Magellan. The Viking press, 1938.