Ritzer, G. (2004). Classical sociological theoryGeorge Ritzer and Douglas J. Goodman. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Ritzer, George. Classical Sociological TheoryGeorge Ritzer and Douglas J. Goodman. McGraw-Hill, 2004.
Lua MLA (8ú heag.)Ritzer, George. Classical Sociological TheoryGeorge Ritzer and Douglas J. Goodman. McGraw-Hill, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.