References
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- CLELAND , D. , and KING , W. , 1968 , Systems Analysis and Project Management , ( McGraw-Hill, Maidenhead ).
- FINK , A. , and KOSECOFF , J. , 1985 , How to Conduct Surveys , ( Sage, :London ).
- KALTON , G. , 1983 , Introduction to Survey Sampling , ( Sage, London ).
- KHARBANDA , O. P. and STALLWORTHY , E. A. , 1983 , How to Learn from Project Disasters , ( Gower, Aldershot ).