APA (7th ed.) Citation

Morison, S. E. (1956). Christopher Columbus, mariner. New American Library.

Chicago Style (17th ed.) Citation

Morison, Samuel Eliot. Christopher Columbus, Mariner. Nueva York: New American Library, 1956.

MLA (9th ed.) Citation

Morison, Samuel Eliot. Christopher Columbus, Mariner. New American Library, 1956.