International Geographical Congress Montréal, Québec, International Geographical Union, Adams, W. P., & Helleiner, F. M. (1972). International geography, 1972: La géographie internationale. University of Toronto Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInternational Geographical Congress Montréal, Québec, International Geographical Union, W. Peter Adams, और Frederick M. Helleiner. International Geography, 1972: La Géographie Internationale. University of Toronto Press, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्रInternational Geographical Congress Montréal, Québec, et al. International Geography, 1972: La Géographie Internationale. University of Toronto Press, 1972.
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