Barnes, H. E. (1948). Historical sociology: Its origins and development. Philosophical Library.
Lua i Stíl Chicago (17ú heag.)Barnes, Harry Elmer. Historical Sociology: Its Origins and Development. New York: Philosophical Library, 1948.
Lua MLA (9ú heag.)Barnes, Harry Elmer. Historical Sociology: Its Origins and Development. Philosophical Library, 1948.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.