Dyfyniad APA

(2004). Journal of construction engineering and managementJuli/Agutus, September/Oktober, Nopember/Desember 2004. ASCE.

Dyfyniad Arddull Chicago

Journal of Construction Engineering and ManagementJuli/Agutus, September/Oktober, Nopember/Desember 2004. ASCE, 2004.

Dyfyniad MLA

Journal of Construction Engineering and ManagementJuli/Agutus, September/Oktober, Nopember/Desember 2004. ASCE, 2004.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.