Chapman, C., & Ward, S. (2003). Project risk management: processes, techniques and insights (2nd Ed.). UK: John Wiley & Sons. (TSDAS Digital Library: T56.8 Cha)

Pritchard, C. L.(2010). Risk management: Concept and guidance (4th Ed.). ESI International.

Project Management Institute (COR). (2009). Practice standard for project risk management. USA: Project Management Inst. (TSDAS Digital Library: HD69 P75Pra)