DOUGLAS, I. [., & SPENCER, T. [. (1985). Environmental change and tropical geomorphology. George Allen and Unwin.
Čikaški stil citiranja (17. izdanje)DOUGLAS, I [ED.], i T [ED.] SPENCER. Environmental Change and Tropical Geomorphology. London: George Allen and Unwin, 1985.
MLA način citiranja (9. izdanje)DOUGLAS, I [ED.], i T [ED.] SPENCER. Environmental Change and Tropical Geomorphology. George Allen and Unwin, 1985.
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