ASHWORTH, A. (2013). Willis’s practice and procedure for the quantity surveyor. John Wiley.
Lua i Stíl Chicago (17ú heag.)ASHWORTH, Allan. Willis’s Practice and Procedure for the Quantity Surveyor. John Wiley, 2013.
Lua MLA (9ú heag.)ASHWORTH, Allan. Willis’s Practice and Procedure for the Quantity Surveyor. John Wiley, 2013.
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