Robertson. (2007). The secrets of power selling: 101 tips to help you improve your sales results. John Wiley & Sons.
Chicago Style (17th ed.) CitationRobertson. The Secrets of Power Selling: 101 Tips to Help You Improve Your Sales Results. Ontario,Canada: John Wiley & Sons, 2007.
MLA (9th ed.) CitationRobertson. The Secrets of Power Selling: 101 Tips to Help You Improve Your Sales Results. John Wiley & Sons, 2007.
Warning: These citations may not always be 100% accurate.