APA (7th ed.) Citation

Lee, S., Trench, W., & Willis, A. (2005). Willis's elements of quantity surveying. Blackwell Publications.

Chicago Style (17th ed.) Citation

Lee, Sandra, William Trench, and Andrew Willis. Willis's Elements of Quantity Surveying. London: Blackwell Publications, 2005.

MLA (9th ed.) Citation

Lee, Sandra, et al. Willis's Elements of Quantity Surveying. Blackwell Publications, 2005.