Ritzer, G., & Goodman, D. J. (2004). Sociological theory (sixth edition.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Ritzer, George, agus Douglas J. Goodman. Sociological Theory. sixth edition. Boston: McGraw-Hill, 2004.
Lua MLA (8ú heag.)Ritzer, George, agus Douglas J. Goodman. Sociological Theory. sixth edition. McGraw-Hill, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.