Drago, R. (1992). Do efficiency wages explain dismissals? National Institute of Labour Studies.
Lua i Stíl Chicago (17ú heag.)Drago, Robert. Do Efficiency Wages Explain Dismissals? Adelaide: National Institute of Labour Studies, 1992.
Lua MLA (8ú heag.)Drago, Robert. Do Efficiency Wages Explain Dismissals? National Institute of Labour Studies, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.