Food and Agriculture Organization of the United Nations. (1980). Special readings in conservation. Food and Agriculture Organization of the United Nations.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিFood and Agriculture Organization of the United Nations. Special Readings in Conservation. Rome: Food and Agriculture Organization of the United Nations, 1980.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিFood and Agriculture Organization of the United Nations. Special Readings in Conservation. Food and Agriculture Organization of the United Nations, 1980.
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