United States. National Archives and Records Service, National Board of Health (U.S.), & United States. Public Health Service. (1975). Letters received by the National Board of Health, 1879-1884, and related register, 1879-1882. National Archives, National Archives and Records Service, General Services Administration.
Chicago Style (17. basım) AtıfUnited States. National Archives and Records Service, National Board of Health (U.S.), ve United States. Public Health Service. Letters Received by the National Board of Health, 1879-1884, and Related Register, 1879-1882. Washington: National Archives, National Archives and Records Service, General Services Administration, 1975.
MLA (8th ed.) AtıfUnited States. National Archives and Records Service, et al. Letters Received by the National Board of Health, 1879-1884, and Related Register, 1879-1882. National Archives, National Archives and Records Service, General Services Administration, 1975.