Não informado. Kansas geographer. Kansas Council for Geographic Education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Kansas Geographer. Manhattan, Kan: Kansas Council for Geographic Education.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Kansas Geographer. Kansas Council for Geographic Education.
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