Cita APA (7a ed.)
Madariaga, S. d. (1940). Christopher Columbus: Being the life of the very magnificent lord Don Cristobal Colón. The Macmillan company.
Cita Chicago Style (17a ed.)
Madariaga, Salvador de. Christopher Columbus: Being the Life of the Very Magnificent Lord Don Cristobal Colón. New York: The Macmillan company, 1940.
Cita MLA (9a ed.)
Madariaga, Salvador de. Christopher Columbus: Being the Life of the Very Magnificent Lord Don Cristobal Colón. The Macmillan company, 1940.
Precaución: Estas citas no son 100% exactas.