Technical Centre for Agricultural and Rural Cooperation (Ede, Netherlands). (1995). Agricultural extension in Africa. Technical Centre for Agricultural and Rural Co-operation.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Technical Centre for Agricultural and Rural Cooperation (Ede, Netherlands). Agricultural Extension in Africa. Wageningen, The Netherlands: Technical Centre for Agricultural and Rural Co-operation, 1995.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Technical Centre for Agricultural and Rural Cooperation (Ede, Netherlands). Agricultural Extension in Africa. Technical Centre for Agricultural and Rural Co-operation, 1995.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.