League of Nations. Secretariat. Economic and Financial Section. (1928). Memorandum on production and trade. Submitted to the Preparatory Committee for the International Economic Conference. Imp. de la Tribune.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)League of Nations. Secretariat. Economic and Financial Section. Memorandum on Production and Trade. Submitted to the Preparatory Committee for the International Economic Conference. Geneva: Imp. de la Tribune, 1928.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)League of Nations. Secretariat. Economic and Financial Section. Memorandum on Production and Trade. Submitted to the Preparatory Committee for the International Economic Conference. Imp. de la Tribune, 1928.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.