Duffuaa, S. O. (1999). Planning and control of maintenance systems: Modeling and analysisSalih O. Duffuaa, A. Raouf, John Dixon Campbell. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Duffuaa, Salih O. Planning and Control of Maintenance Systems: Modeling and AnalysisSalih O. Duffuaa, A. Raouf, John Dixon Campbell. John Wiley & Sons, 1999.
Lua MLA (8ú heag.)Duffuaa, Salih O. Planning and Control of Maintenance Systems: Modeling and AnalysisSalih O. Duffuaa, A. Raouf, John Dixon Campbell. John Wiley & Sons, 1999.
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