Dyfyniad APA

Howard, P. (2007). Perfect your sentences. Orient longman.

Dyfyniad Arddull Chicago

Howard, Peter. Perfect Your Sentences. Hyderabad: Orient longman, 2007.

Dyfyniad MLA

Howard, Peter. Perfect Your Sentences. Orient longman, 2007.

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