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.
Deismireacht MLASchaefer, Richard T. Sociology: A Brief Introduction. Boston: McGraw-Hill, 2004.
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