SMITH, R. W., & FONTANA, A. Social problems: Role, institutional, and societal perspectives. Holt.
Lua i Stíl Chicago (17ú heag.)SMITH, Ronald W., agus Andrea FONTANA. Social Problems: Role, Institutional, and Societal Perspectives. New York: Holt.
Lua MLA (9ú heag.)SMITH, Ronald W., agus Andrea FONTANA. Social Problems: Role, Institutional, and Societal Perspectives. Holt.
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