Schaefer, R. T. (2004). Sociology: A brief introduction. Boston: McGraw-Hill.
Trích dẫn kiểu ChicagoSchaefer, Richard T. Sociology: A Brief Introduction. Boston: McGraw-Hill, 2004.
MLA引文Schaefer, Richard T. Sociology: A Brief Introduction. Boston: McGraw-Hill, 2004.
警告：这些引文格式不一定是100％准确.