APA (7th ed.) Citation

Willis, C. J., & Ashworth, A. (1987). Practice and procedure for the quantity surveyor (9th ed.). Collins.

Chicago Style (17th ed.) Citation

Willis, Christopher J., and A. Ashworth. Practice and Procedure for the Quantity Surveyor. 9th ed. London: Collins, 1987.

MLA (9th ed.) Citation

Willis, Christopher J., and A. Ashworth. Practice and Procedure for the Quantity Surveyor. 9th ed. Collins, 1987.