DOUGLAS, I. [., & SPENCER, T. [. (1985). Environmental change and tropical geomorphology. George Allen and Unwin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDOUGLAS, I [ED.], और T [ED.] SPENCER. Environmental Change and Tropical Geomorphology. London: George Allen and Unwin, 1985.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDOUGLAS, I [ED.], और T [ED.] SPENCER. Environmental Change and Tropical Geomorphology. George Allen and Unwin, 1985.
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