Não informado. (1902). Journal of Geography. National Council for Geographic Education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Geography. Indiana, Pa: National Council for Geographic Education, 1902.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Geography. National Council for Geographic Education, 1902.
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