(1879). Statistical abstract of the United States: The national data book / US Department of Commerce, Economics and Statistics Administration, US Census Bureau. US Gov. Print. Off..
Lua i Stíl Chicago (17ú heag.)Statistical Abstract of the United States: The National Data Book / US Department of Commerce, Economics and Statistics Administration, US Census Bureau. Waschington, DC: US Gov. Print. Off., 1879.
Lua MLA (8ú heag.)Statistical Abstract of the United States: The National Data Book / US Department of Commerce, Economics and Statistics Administration, US Census Bureau. US Gov. Print. Off., 1879.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.