Dyfyniad APA

(1991). English For Civil Engineering Student Book 2/ Paulinus Soge. UAJY.

Dyfyniad Arddull Chicago

English For Civil Engineering Student Book 2/ Paulinus Soge. UAJY, 1991.

Dyfyniad MLA

English For Civil Engineering Student Book 2/ Paulinus Soge. UAJY, 1991.

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