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Trích dẫn kiểu Chicago (xuất bản lần thứ 7)ebrary, Inc, Paul van Mele, Jeffery W. Bentley, và Robert G. Guéi. African Seed Enterprises: Sowing the Seeds of Food Security. Cambridge, Mass.: Published by the Food and Agriculture Organization of the United Nations and the Africa Rice Center by arrangement with CAB International, 2011.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)ebrary, Inc, et al. African Seed Enterprises: Sowing the Seeds of Food Security. Published by the Food and Agriculture Organization of the United Nations and the Africa Rice Center by arrangement with CAB International, 2011.