Allard, L. (1994). How to improve your sales performance. UBS Publishers'.
芝加哥风格引文Allard, Lloyd. How to Improve Your Sales Performance. New Delhi: UBS Publishers', 1994.
MLA引文Allard, Lloyd. How to Improve Your Sales Performance. UBS Publishers', 1994.
警告：这些引文格式不一定是100％准确.