United States. Department of State, United States. National Archives and Records Service, & Yerby, W. J. (1968). Records of the Department of State relating to internal affairs of Portugal, 1910-1929. National Archives and Records Service.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United States. Department of State, United States. National Archives and Records Service, و William James Yerby. Records of the Department of State Relating to Internal Affairs of Portugal, 1910-1929. Washington: National Archives and Records Service, 1968.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United States. Department of State, et al. Records of the Department of State Relating to Internal Affairs of Portugal, 1910-1929. National Archives and Records Service, 1968.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.