Lua APA (7ú heag.)

Schaefer, R. T. (2012). Sociology (13th ed.). McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Schaefer, Richard T. Sociology. 13th ed. New York: McGraw-Hill, 2012.

Lua MLA (8ú heag.)

Schaefer, Richard T. Sociology. 13th ed. McGraw-Hill, 2012.

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