APA (7 वां संस्करण) प्रशस्ति पत्र
Tangonyire, R. C., & Achal, L. K. (2012). Economic behaviour as if others too had interests. Langaa RPCIG.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Tangonyire, Raymond Chegedua, और Lawrence Kyaligonza Achal. Economic Behaviour as If Others Too Had Interests. Bamenda, Cameroon: Langaa RPCIG, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Tangonyire, Raymond Chegedua, और Lawrence Kyaligonza Achal. Economic Behaviour as If Others Too Had Interests. Langaa RPCIG, 2012.
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