Παραπομπή σε μορφή APA (7η εκδ.)

Não informado. (1980). Singapore journal of tropical geography. National University od Singapore, Department of Geography.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Não informado. Singapore Journal of Tropical Geography. Singapore: National University od Singapore, Department of Geography, 1980.

Παραπομπή σε μορφή MLA (8th εκδ.)

Não informado. Singapore Journal of Tropical Geography. National University od Singapore, Department of Geography, 1980.

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