FAO/UNDP Project BGD/79/034 'Strengthening the Agricultural Extension Service'. (1985). Agricultural extension manual: The training and visit system. Ministry of Agriculture [etc.].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)FAO/UNDP Project BGD/79/034 'Strengthening the Agricultural Extension Service'. Agricultural Extension Manual: The Training and Visit System. Dhaka: Ministry of Agriculture [etc.], 1985.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)FAO/UNDP Project BGD/79/034 'Strengthening the Agricultural Extension Service'. Agricultural Extension Manual: The Training and Visit System. Ministry of Agriculture [etc.], 1985.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.