British Geomorphological Research Group. (1981). Earth Surface Processes and Landforms. John Wiley & Sons.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBritish Geomorphological Research Group. Earth Surface Processes and Landforms. Sussex, Inglaterra: John Wiley & Sons, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBritish Geomorphological Research Group. Earth Surface Processes and Landforms. John Wiley & Sons, 1981.
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