Smith, R. W., & Preston, F. W. (1982). Sociology: An introduction (2nd ed.). St. Martin's.

Smith, Ronald W., and Frederick W. Preston. Sociology: An Introduction. 2nd ed. New York: St. Martin's, 1982.

Smith, Ronald W., and Frederick W. Preston. Sociology: An Introduction. 2nd ed. St. Martin's, 1982.