Ritzer, G. (2003). Sociological theoryGeorge Ritzer and Douglas J. Goodman. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Ritzer, George. Sociological TheoryGeorge Ritzer and Douglas J. Goodman. McGraw-Hill, 2003.
Lua MLA (8ú heag.)Ritzer, George. Sociological TheoryGeorge Ritzer and Douglas J. Goodman. McGraw-Hill, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.