Geuss, Raymond. The idea of a critical theory : Habermas and the Frankfurt School / Raymond Geuss. - Cambridge : Cambridge University Press, 1981. - 100 p. ; 22 cm. - Modern European philosophy. . ISBN: 0521240727 Subjects--Personal Names: Habermas, Jurgen. Subjects--Corporate Names: Frankfurt School of Sociology. Subjects--Topical Terms: Critical theory.