Dyfyniad APA

John Langan. (2004). Sentence skills, form B. A workbook for writers.

Dyfyniad Arddull Chicago

John Langan. Sentence Skills, Form B. A Workbook for Writers. 2004.

Dyfyniad MLA

John Langan. Sentence Skills, Form B. A Workbook for Writers. 2004.

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