United States. National Archives and Records Administration & United States. Department of State. (1940). Confidential U.S. State Department central files: Decimal numbers 741 and 711.41.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United States. National Archives and Records Administration و United States. Department of State. Confidential U.S. State Department Central Files: Decimal Numbers 741 and 711.41. 1940.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United States. National Archives and Records Administration و United States. Department of State. Confidential U.S. State Department Central Files: Decimal Numbers 741 and 711.41. 1940.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.