Cita APA (7a ed.)

(1939). Columbus sails (4a. ed.). Coward-McCann.

Cita Chicago Style (17a ed.)

Columbus Sails. 4a. ed. New York: Coward-McCann, 1939.

Cita MLA (9a ed.)

Columbus Sails. 4a. ed. Coward-McCann, 1939.