Dyfyniad APA

(2009). Journal of management in engineering January-Oktober 2009. ASCE.

Dyfyniad Arddull Chicago

Journal of Management in Engineering January-Oktober 2009. ASCE, 2009.

Dyfyniad MLA

Journal of Management in Engineering January-Oktober 2009. ASCE, 2009.

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