McDonagh, E. C., & Simpson, J. E. (1969). Social problems: Persistent challenges. (2nd ed.). Holt, Rinehart and Winston.
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Chicago-čujuhus (17. p.)
McDonagh, Edward C., juo Jon E. Simpson. Social Problems: Persistent Challenges. 2nd ed. New York: Holt, Rinehart and Winston, 1969.
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MLA-čujuhus (9. p.)
McDonagh, Edward C., juo Jon E. Simpson. Social Problems: Persistent Challenges. 2nd ed. Holt, Rinehart and Winston, 1969.
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