Kornblum, W., Julian, J., & Smith, C. D. (1992). Social Problems (7th ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Kornblum, William, Joseph Julian, agus Carolyn D. Smith. Social Problems. 7th ed. New Jersey: Prentice Hall, 1992.
Lua MLA (9ú heag.)Kornblum, William, et al. Social Problems. 7th ed. Prentice Hall, 1992.
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