United States. National Archives and Records Administration. (2002). [Index (Soundex) to the population schedules of the fifteenth census of the United States, 1930, North Carolina]. National Archives and Records Administration.
Chicago Style (17th ed.) CitationUnited States. National Archives and Records Administration. [Index (Soundex) to the Population Schedules of the Fifteenth Census of the United States, 1930, North Carolina]. [Washington, D.C.: National Archives and Records Administration, 2002.
MLA引文United States. National Archives and Records Administration. [Index (Soundex) to the Population Schedules of the Fifteenth Census of the United States, 1930, North Carolina]. National Archives and Records Administration, 2002.
警告：这些引文格式不一定是100％准确.