Thull, J. (2006). Exceptional selling: How the best connect and win in high stakes sales. Hoboken, N.J.: John Wiley & Sons.
शिकागो स्टाइल उद्धरणThull, Jeff. Exceptional Selling: How the Best Connect and Win in High Stakes Sales. Hoboken, N.J.: John Wiley & Sons, 2006.
एमएलए उद्धरणThull, Jeff. Exceptional Selling: How the Best Connect and Win in High Stakes Sales. Hoboken, N.J.: John Wiley & Sons, 2006.
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