OECD Policies and Environment Division in the Food, Agriculture and Fisheries Directorate. (2001). Environmental indicators for agriculture. OECD Publications Services.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)OECD Policies and Environment Division in the Food, Agriculture and Fisheries Directorate. Environmental Indicators for Agriculture. Paris, France: OECD Publications Services, 2001.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)OECD Policies and Environment Division in the Food, Agriculture and Fisheries Directorate. Environmental Indicators for Agriculture. OECD Publications Services, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.