United States. National Archives and Records Administration & National Archives Trust Fund Board. (2002). The 1930 federal population census: Catalog of National Archives microfilm. National Archives Trust Fund Board.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United States. National Archives and Records Administration و National Archives Trust Fund Board. The 1930 Federal Population Census: Catalog of National Archives Microfilm. Washington, D.C.: National Archives Trust Fund Board, 2002.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United States. National Archives and Records Administration و National Archives Trust Fund Board. The 1930 Federal Population Census: Catalog of National Archives Microfilm. National Archives Trust Fund Board, 2002.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.