LEE, S. T. (2011). Willis's element of quantity surveying. Wiley-Blackwell.
Cita Chicago (17th ed.)LEE, Sandra Trench. Willis's Element of Quantity Surveying. Wiley-Blackwell, 2011.
Cita MLA (9th ed.)LEE, Sandra Trench. Willis's Element of Quantity Surveying. Wiley-Blackwell, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.