SETHI SUBHASH C. (2003). TWENTY FIVE MINTUTES TO ENHANCE YOUR CUSTOMER SELLING. INDIANA BOOKS.
芝加哥风格引文SETHI SUBHASH C. TWENTY FIVE MINTUTES TO ENHANCE YOUR CUSTOMER SELLING. NEW DELHI: INDIANA BOOKS, 2003.
MLA引文SETHI SUBHASH C. TWENTY FIVE MINTUTES TO ENHANCE YOUR CUSTOMER SELLING. INDIANA BOOKS, 2003.
警告：这些引文格式不一定是100％准确.