Atwood, W. W. (1929). The americas: The earth and its people. Ginn and Company.
Citazione stile Chigago Style (17a edizione)Atwood, Wallace W. The Americas: The Earth and Its People. Ginn and Company, 1929.
Citatione MLA (9a ed.)Atwood, Wallace W. The Americas: The Earth and Its People. Ginn and Company, 1929.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.