Cita APA (7th ed.)

ASHWORTH, A. H. (2013). Willis's practice and procedure for the quantity surveyor. John Wiley & Sons.

Cita Chicago (17th ed.)

ASHWORTH, Allan Hogg. Willis's Practice and Procedure for the Quantity Surveyor. John Wiley & Sons, 2013.

Cita MLA (9th ed.)

ASHWORTH, Allan Hogg. Willis's Practice and Procedure for the Quantity Surveyor. John Wiley & Sons, 2013.