Bibliografi : hlm. 135 - 138 Indeks
Bibligrafi hlm, 275-276. ; ilus
Judul asli : Rules of selling by Joe Girard's
Bibliografi: 79-84
Judul asli: Truth Beyond Relativism: Karl Manheim's Sociology of Knowledge
Bibilografi Hlm. 279-280Indeks hlm.281-284
Judul asli: Truth Beyond Relativism: Karl Manheim's Sociology of Knowledge