Citação norma APA

Caldwell, J. C. (1975). The Sahelian drought and its demographic implications. Overseas Liaison Committee, American Council on Education.

Citação norma Chicago

Caldwell, John C. The Sahelian Drought and Its Demographic Implications. [Washington]: Overseas Liaison Committee, American Council on Education, 1975.

Citação norma MLA

Caldwell, John C. The Sahelian Drought and Its Demographic Implications. Overseas Liaison Committee, American Council on Education, 1975.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.