Gourou, P. (1959). The tropical world: Its social and economic conditions and its future status (new impression (5. printing).). Longmans.
Chicago-Zitierstil (17. Ausg.)Gourou, Pierre. The Tropical World: Its Social and Economic Conditions and Its Future Status. new impression (5. printing). London [u.a.]: Longmans, 1959.
MLA-Zitierstil (9. Ausg.)Gourou, Pierre. The Tropical World: Its Social and Economic Conditions and Its Future Status. new impression (5. printing). Longmans, 1959.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.