Dyfyniad APA

(2012). Journal of Profesional Issues in Engineering Education & Pratice Volume 138 January No. 01 s/d Oktober No. 04 th. 2012. ASCE American Society of Civil Engineers.

Dyfyniad Arddull Chicago

Journal of Profesional Issues in Engineering Education & Pratice Volume 138 January No. 01 S/d Oktober No. 04 Th. 2012. ASCE American Society of Civil Engineers, 2012.

Dyfyniad MLA

Journal of Profesional Issues in Engineering Education & Pratice Volume 138 January No. 01 S/d Oktober No. 04 Th. 2012. ASCE American Society of Civil Engineers, 2012.

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