Lester, A. (2007). Project management, planning and control: Managing engineering, construction and manufacturing projects to PMI, APM and BSI standards (5th ed.). Elsevier/Butterworth-Heinemann.

Lester, Albert. Project Management, Planning and Control: Managing Engineering, Construction and Manufacturing Projects to PMI, APM and BSI Standards. 5th ed. Amsterdam ; Boston ; London: Elsevier/Butterworth-Heinemann, 2007.

Lester, Albert. Project Management, Planning and Control: Managing Engineering, Construction and Manufacturing Projects to PMI, APM and BSI Standards. 5th ed. Elsevier/Butterworth-Heinemann, 2007.