United States. National Archives and Records Service. (1962). Index (soundex) to the population schedules of the tenth census of the United States, 1880, [Maryland]. National Archives and Records Service.
Lua i Stíl Chicago (17ú heag.)United States. National Archives and Records Service. Index (soundex) to the Population Schedules of the Tenth Census of the United States, 1880, [Maryland]. Washington: National Archives and Records Service, 1962.
Lua MLA (8ú heag.)United States. National Archives and Records Service. Index (soundex) to the Population Schedules of the Tenth Census of the United States, 1880, [Maryland]. National Archives and Records Service, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.