Dyfyniad APA

BARKER ALAN. (2010). SUNDAY TIMES IMPROVE YOUR COMMUNICATION SKILLS (2ND.). KOGAN PAGE.

Dyfyniad Arddull Chicago

BARKER ALAN. SUNDAY TIMES IMPROVE YOUR COMMUNICATION SKILLS. 2ND. LONDON: KOGAN PAGE, 2010.

Dyfyniad MLA

BARKER ALAN. SUNDAY TIMES IMPROVE YOUR COMMUNICATION SKILLS. 2ND. KOGAN PAGE, 2010.

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