Food and Agriculture Organization of the United Nations. (1952). Soil conservation: An intertnational study. Food and Agriculture Organization.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Food and Agriculture Organization of the United Nations. Soil Conservation: An Intertnational Study. United Nations: Food and Agriculture Organization, 1952.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Food and Agriculture Organization of the United Nations. Soil Conservation: An Intertnational Study. Food and Agriculture Organization, 1952.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.