Dyfyniad APA

ASHWORTH, A. (2013). Willis’s practice and procedure for the quantity surveyor. John Wiley.

Dyfyniad Arddull Chicago

ASHWORTH, Allan. Willis’s Practice and Procedure for the Quantity Surveyor. John Wiley, 2013.

Dyfyniad MLA

ASHWORTH, Allan. Willis’s Practice and Procedure for the Quantity Surveyor. John Wiley, 2013.

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