Greer, A. (1976). Understanding sociology. W.M.C Brown Company.
Cita Chicago (17th ed.)Greer, Ann. Understanding Sociology. NULL: W.M.C Brown Company, 1976.
Cita MLA (9th ed.)Greer, Ann. Understanding Sociology. W.M.C Brown Company, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.