Cita APA

Bergreen, L. 1. (2011). Columbus: The four voyages. New York, New York: Viking.

Citación estilo Chicago

Bergreen, Laurence 1950-. Columbus: The Four Voyages. New York, New York: Viking, 2011.

Cita MLA

Bergreen, Laurence 1950-. Columbus: The Four Voyages. New York, New York: Viking, 2011.