Citazione Stile APA (7a Edizione)

Lee, S. J., Trench, W. F., & Willis, A. (2005). Willis's elements of quantity surveying (10th ed.). Blackwell Publishing.

Citazione stile Chigago Style (17a edizione)

Lee, Sandra Jean, William F.R.I.C.S Trench, e Andrew Willis. Willis's Elements of Quantity Surveying. 10th ed. Oxford, England: Blackwell Publishing, 2005.

Citatione MLA (9a ed.)

Lee, Sandra Jean, et al. Willis's Elements of Quantity Surveying. 10th ed. Blackwell Publishing, 2005.