Dyfyniad APA

Frazier, L., & Mills, R. Northstar: Listening and speaking (3a ed.).

Dyfyniad Arddull Chicago

Frazier, Laurice, and Robin Mills. Northstar: Listening and Speaking. 3a ed.

Dyfyniad MLA

Frazier, Laurice, and Robin Mills. Northstar: Listening and Speaking. 3a ed.

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