Griffiths, H. (2017). Introduction to Sociology (2nd.). Rice University.
Lua i Stíl Chicago (17ú heag.)Griffiths, Heather. Introduction to Sociology. 2nd. Rice University, 2017.
Lua MLA (9ú heag.)Griffiths, Heather. Introduction to Sociology. 2nd. Rice University, 2017.
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