APA (7 वां संस्करण) प्रशस्ति पत्र
Burnham, P. C. (1980). Opportunity and constraint in a savanna society: The Gbaya of Meiganga, Cameroon. Academic Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Burnham, P. C. Opportunity and Constraint in a Savanna Society: The Gbaya of Meiganga, Cameroon. New York: Academic Press, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Burnham, P. C. Opportunity and Constraint in a Savanna Society: The Gbaya of Meiganga, Cameroon. Academic Press, 1980.
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