Lua APA (7ú heag.)

Schaefer, R. T. (2005). Sociology (Ninth edition.). McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Schaefer, Richard T. Sociology. Ninth edition. Boston: McGraw-Hill, 2005.

Lua MLA (8ú heag.)

Schaefer, Richard T. Sociology. Ninth edition. McGraw-Hill, 2005.

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