Dyfyniad APA

Osmond, A. (2013). Academic writing and grammar for students. Sage.

Dyfyniad Arddull Chicago

Osmond, Alex. Academic Writing and Grammar for Students. Los Angeles, Calif: Sage, 2013.

Dyfyniad MLA

Osmond, Alex. Academic Writing and Grammar for Students. Sage, 2013.

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