Dyfyniad APA

Elaine Walker. (2000). New grammar practice for pre-intermediate students. London: Longman.

Dyfyniad Arddull Chicago

Elaine Walker. New Grammar Practice for Pre-intermediate Students. London: Longman, 2000.

Dyfyniad MLA

Elaine Walker. New Grammar Practice for Pre-intermediate Students. London: Longman, 2000.

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