Hughes, M. (2011). Sociology: The core. McGraw-Hill.
Cita Chicago (17th ed.)Hughes, Michaul. Sociology: The Core. NewYork: McGraw-Hill, 2011.
Cita MLA (9th ed.)Hughes, Michaul. Sociology: The Core. McGraw-Hill, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.