Organisation for Economic Co-operation and Development, Czech Republic. Ministerstvo zemedelstvi, & ProQuest (Firm). (2010). Challenges for agricultural research. OECD ; Ministry of Agriculture of the Czech Republic.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Organisation for Economic Co-operation and Development, Czech Republic. Ministerstvo zemedelstvi, و ProQuest (Firm). Challenges for Agricultural Research. [Paris] : Praha: OECD ; Ministry of Agriculture of the Czech Republic, 2010.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Organisation for Economic Co-operation and Development, et al. Challenges for Agricultural Research. OECD ; Ministry of Agriculture of the Czech Republic, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.