APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.