Não informado. (1958). Journal of tropical geography. University of Singapore, Department of Geography.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Journal of Tropical Geography. Singapore: University of Singapore, Department of Geography, 1958.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Journal of Tropical Geography. University of Singapore, Department of Geography, 1958.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.