Lua APA (7ú heag.)

Schaefer, R. T. (2008). Sociology (11th ed.). McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Schaefer, Richard T. Sociology. 11th ed. Boston: McGraw-Hill, 2008.

Lua MLA (9ú heag.)

Schaefer, Richard T. Sociology. 11th ed. McGraw-Hill, 2008.

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