Levin, J. V. (1960). Export Economics Their pattern of Development in Historical Persspective.
استشهاد بنمط شيكاغوLevin, Jonathan V. Export Economics Their Pattern of Development in Historical Persspective. :, 1960.
MLA استشهادLevin, Jonathan V. Export Economics Their Pattern of Development in Historical Persspective. 1960.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.