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Perera, Srinath, Zhou, Lei, Ekundayo, Damilola, Ashworth, Allan and Symonds, Barry (2013) Analysis of the Delegate Survey: How to educate quantity surveyors to meet future needs. Project Report. Northumbria University, Newcastle upon Tyne.
Ashworth, Allan and Perera, Srinath (2015) Cost Studies of Buildings [6th edition]. Taylor & Francis, London. ISBN 9781138017351