APA (7th ed.) Citation

Bergreen, L. (2011). Columbus: The four voyages. Viking.

Chicago Style (17th ed.) Citation

Bergreen, Laurence. Columbus: The Four Voyages. New York: Viking, 2011.

MLA (9th ed.) Citation

Bergreen, Laurence. Columbus: The Four Voyages. Viking, 2011.

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