Schaefer, R. T. (2006). Sociology: A brief introduction (6th, annotated instructor's ed.). Boston, Mass.: McGraw-Hill.
Dyfyniad Arddull ChicagoSchaefer, Richard T. Sociology: A Brief Introduction. 6th, annotated instructor's ed. Boston, Mass.: McGraw-Hill, 2006.
Dyfyniad MLASchaefer, Richard T. Sociology: A Brief Introduction. 6th, annotated instructor's ed. Boston, Mass.: McGraw-Hill, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.