Society of American Foresters. (1960). World directory of forestry schools. Food and Agriculture Organization of the United Nations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSociety of American Foresters. World Directory of Forestry Schools. Food and Agriculture Organization of the United Nations, 1960.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSociety of American Foresters. World Directory of Forestry Schools. Food and Agriculture Organization of the United Nations, 1960.
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