Cita APA (7th ed.)

Gourou, P., & Tr. by Laborde, E. D. (1966). The tropical world: Its social and economic conditions and its future status (4th ed.). Longman.

Cita Chicago (17th ed.)

Gourou, Pierre, i E. D. Tr. by Laborde. The Tropical World: Its Social and Economic Conditions and Its Future Status. 4th ed. London: Longman, 1966.

Cita MLA (9th ed.)

Gourou, Pierre, i E. D. Tr. by Laborde. The Tropical World: Its Social and Economic Conditions and Its Future Status. 4th ed. Longman, 1966.