Kerbo, H. R. (1996). Social stratification and inequality: Class conflict in historical and comparative perspective (Third edition.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Kerbo, Harold R. Social Stratification and Inequality: Class Conflict in Historical and Comparative Perspective. Third edition. New York: McGraw-Hill, 1996.
Lua MLA (8ú heag.)Kerbo, Harold R. Social Stratification and Inequality: Class Conflict in Historical and Comparative Perspective. Third edition. McGraw-Hill, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.