Barnes, H. E. (1970). An introduction to the history of sociology: Edited by Harry Elmer Barnes. University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)Barnes, Harry Elmer. An Introduction to the History of Sociology: Edited by Harry Elmer Barnes. Chicago: University of Chicago Press, 1970.
Lua MLA (8ú heag.)Barnes, Harry Elmer. An Introduction to the History of Sociology: Edited by Harry Elmer Barnes. University of Chicago Press, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.