League of Nations. Sercretariat. Financial Section and Economic Intelligence Service. (1941). Europe's trade: A study of the trade of European countries with each other and with the rest of the world. League of Nations.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)League of Nations. Sercretariat. Financial Section and Economic Intelligence Service. Europe's Trade: A Study of the Trade of European Countries with Each Other and with the Rest of the World. Geneva: League of Nations, 1941.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)League of Nations. Sercretariat. Financial Section and Economic Intelligence Service. Europe's Trade: A Study of the Trade of European Countries with Each Other and with the Rest of the World. League of Nations, 1941.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.