APA (7th ed.) Citation

United States. National Archives and Records Administration, United States. Census Office, & Heritage Quest Genealogical Services. [12th census of population, 1900. National Archives and Records Administration.

Chicago Style (17th ed.) Citation

United States. National Archives and Records Administration, United States. Census Office, and Heritage Quest Genealogical Services. [12th Census of Population, 1900. [Washington, D.C.: National Archives and Records Administration.

MLA (8th ed.) Citation

United States. National Archives and Records Administration, et al. [12th Census of Population, 1900. National Archives and Records Administration.