Organisation for Economic Co-operation and Development & ProQuest (Firm). (2012). Illegal trade in environmentally sensitive goods. OECD.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Organisation for Economic Co-operation and Development و ProQuest (Firm). Illegal Trade in Environmentally Sensitive Goods. Paris: OECD, 2012.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Organisation for Economic Co-operation and Development و ProQuest (Firm). Illegal Trade in Environmentally Sensitive Goods. OECD, 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.