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New sales speak : the 9 biggest sales presentation mistakes and how to avoid them
Sjodin, Terri L., (2006)
Science of Evangelism : a corporate guide to presenting your product or service at a seminar or exhibition
Prue, Russell, (2005)
Successful seminar selling : the ultimate small business guide to boosting sales and profits through seminars and workshops
Calvert, Philip, (2004)
Small message, big impact : how to put the power of the elevator speech effect to work for you
Sjodin, Terri L., (2011)