ASHWORTH, A. (2013). Willis’s practice and procedure for the quantity surveyor. John Wiley.
Chicago Style (17. basım) AtıfASHWORTH, Allan. Willis’s Practice and Procedure for the Quantity Surveyor. John Wiley, 2013.
MLA (9th ed.) AtıfASHWORTH, Allan. Willis’s Practice and Procedure for the Quantity Surveyor. John Wiley, 2013.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..