References
The PMI Standards Committee 2004, A Guide to the Project Management Body Of Knowledge, PMI, Upper Darby.
Turner, J. Rodney, The Handbook of Project-Based Management (2nd ed), McGraw-Hill, 1998.
Campbell, Harry & Brown, Richard, Benefit-Cost Analysis, Cambridge University Press, 2003.
Ury, William, Getting Past No, Random Century Australia, 2002.