APA-referens (7:e uppl.)

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.

Chicago-referens (17:e uppl.)

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.

MLA-referens (8:e uppl.)

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.