Cotterill, R. S. (1939). A short history of the Americas. Prentice-Hall.
Cita Chicago (17th ed.)Cotterill, Robert Spencer. A Short History of the Americas. New York: Prentice-Hall, 1939.
Cita MLA (9th ed.)Cotterill, Robert Spencer. A Short History of the Americas. Prentice-Hall, 1939.
Atenció: Aquestes cites poden no estar 100% correctes.