Atwood, W. W. (1929). The americas: The earth and its people. Ginn and Company.
Cita Chicago (17th ed.)Atwood, Wallace W. The Americas: The Earth and Its People. Ginn and Company, 1929.
Cita MLA (9th ed.)Atwood, Wallace W. The Americas: The Earth and Its People. Ginn and Company, 1929.
Atenció: Aquestes cites poden no estar 100% correctes.