lohr, v. (1974). equiping farms with means of mechanistation and their utilisation: Some problems only. the institute of national planning.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)lohr, v. Equiping Farms with Means of Mechanistation and Their Utilisation: Some Problems Only. cairo: the institute of national planning, 1974.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)lohr, v. Equiping Farms with Means of Mechanistation and Their Utilisation: Some Problems Only. the institute of national planning, 1974.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.