BARKER ALAN. (2010). SUNDAY TIMES IMPROVE YOUR COMMUNICATION SKILLS (2ND.). KOGAN PAGE.
芝加哥风格引文BARKER ALAN. SUNDAY TIMES IMPROVE YOUR COMMUNICATION SKILLS. 2ND. LONDON: KOGAN PAGE, 2010.
MLA引文BARKER ALAN. SUNDAY TIMES IMPROVE YOUR COMMUNICATION SKILLS. 2ND. KOGAN PAGE, 2010.
警告：这些引文格式不一定是100％准确.