APA (7 वां संस्करण) प्रशस्ति पत्र
Barkan, J. D. (1979). Politics and public policy in Kenya and Tanzania. Heinemann Educational Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Barkan, Joel D. Politics and Public Policy in Kenya and Tanzania. Nairobi: Heinemann Educational Books, 1979.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Barkan, Joel D. Politics and Public Policy in Kenya and Tanzania. Heinemann Educational Books, 1979.
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