Dyfyniad APA
Schaefer, R. T. (2006). Sociology: A brief introduction (6th ed.). McGraw-Hill.
Dyfyniad Arddull Chicago
Schaefer, Richard T. Sociology: A Brief Introduction. 6th ed. New York ; New Delhi: McGraw-Hill, 2006.
Dyfyniad MLA
Schaefer, Richard T. Sociology: A Brief Introduction. 6th ed. McGraw-Hill, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.