Advanced Sales Skills Certificate Program Manual and CD: Sales Skills Development in a Series of 8 Useful and Humorous Courses, Including Sales Body Language, Sales Humor Delivery and Writing Skills, the Laugh and Learn Series on Sales Letters, Sales Time Management, Sales Territory Management, Internet Searches to Help in Sales, and Writing Clearly, For Introductory to Advanced Levels

Advanced Sales Skills Certificate Program Manual and CD: Sales Skills Development in a Series of 8 Useful and Humorous Courses, Including Sales Body Language, Sales Humor Delivery and Writing Skills, the Laugh and Learn Series on Sales Letters, Sales Time Management, Sales Territory Management, Internet Searches to Help in Sales, and Writing Clearly, For Introductory to Advanced Levels（2003）