Lauer, R. H. (1992). Social problems and the quality of life (5th ed.). Wm. C. Brown.
Cita Chicago (17th ed.)Lauer, Robert H. Social Problems and the Quality of Life. 5th ed. Dubuque, IA: Wm. C. Brown, 1992.
Cita MLA (9th ed.)Lauer, Robert H. Social Problems and the Quality of Life. 5th ed. Wm. C. Brown, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.