1. The management of projects;Morris,1994
2. Cooke-Davies Terence J. Towards improved project management practice. USA. Available from: http://www.dissertation.com.
3. Cooke-Davies Terence J, Schlichter F. John, Bredillet Christophe. Beyond the PMBOK® Guide. PMI Annual Seminars and Symposium 2001. Nashville TS. 2001.
4. Paulk M, Curtis C, Chrissis M, Weber C. Capability Maturity Model for Software (Version 1.1). Carnegie Mellon University, Software Engineering Institute. Downloaded from www.sei.cmu.edu/pub/documents on 10 April 2001. 1993.
5. Morris Peter WG. Researching the unanswered questions of project management. In: Proceedings of the PMI Research Conference, 2000, Paris, PMI; 2000.