United States. National Archives and Records Administration, Williamson, J. A., & Prechtel-Kluskens, C. (1998). Nonstatistical manifests and statistical index cards of aliens arriving at Douglas, Arizona, July 1908-December 1952. National Archives and Records Administration.
Lua i Stíl Chicago (17ú heag.)United States. National Archives and Records Administration, Jo Ann Williamson, agus Claire Prechtel-Kluskens. Nonstatistical Manifests and Statistical Index Cards of Aliens Arriving at Douglas, Arizona, July 1908-December 1952. Washington, DC: National Archives and Records Administration, 1998.
Lua MLA (8ú heag.)United States. National Archives and Records Administration, et al. Nonstatistical Manifests and Statistical Index Cards of Aliens Arriving at Douglas, Arizona, July 1908-December 1952. National Archives and Records Administration, 1998.