APA (7th ed.) Citation

Willis, C. J., Ashworth, A., & Willis, J. A. (1994). Practice and procedure for the quantity surveyor (10th ed.).

Chicago Style (17th ed.) Citation

Willis, Christopher J., Allan Ashworth, and J. Andrew Willis. Practice and Procedure for the Quantity Surveyor. 10th ed. Blackwell Science UK, 1994.

MLA (9th ed.) Citation

Willis, Christopher J., et al. Practice and Procedure for the Quantity Surveyor. 10th ed. 1994.