O'Brien, R. W. 1. . . . e. (1947). Readings in general sociology. Pacific Books.
Lua i Stíl Chicago (17ú heag.)O'Brien, Robert William 1907- ed. Readings in General Sociology. Palo, Alto, Calif: Pacific Books, 1947.
Lua MLA (9ú heag.)O'Brien, Robert William 1907- ed. Readings in General Sociology. Pacific Books, 1947.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.