bognar, j. (1965). the economic-political background of the planning of international trade. National Planning Institute.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)bognar, jozsef. The Economic-political Background of the Planning of International Trade. cairo: National Planning Institute, 1965.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)bognar, jozsef. The Economic-political Background of the Planning of International Trade. National Planning Institute, 1965.