APA (7 वां संस्करण) प्रशस्ति पत्र
Wolmer, W. (2002). Pathways of change in Africa: Crops, livestock and livelihoods in Mali, Ethiopia and Zimbabwe. James Currey.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Wolmer, William. Pathways of Change in Africa: Crops, Livestock and Livelihoods in Mali, Ethiopia and Zimbabwe. Oxford: James Currey, 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Wolmer, William. Pathways of Change in Africa: Crops, Livestock and Livelihoods in Mali, Ethiopia and Zimbabwe. James Currey, 2002.
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