Greenshields, B. (1989). Government intervention in agriculture: Causes and effect. International Association of Agricultural economists.
استشهاد بنمط شيكاغوGreenshields, B. Government Intervention in Agriculture: Causes and Effect. U K: International Association of Agricultural economists, 1989.
MLA استشهادGreenshields, B. Government Intervention in Agriculture: Causes and Effect. International Association of Agricultural economists, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.