C. Brooks John. (2002). Short Cycle Selling--Beating Your Competitors in the Sales Race (In lần thứ 1.). American: MC Graw Hill.
शिकागो स्टाइल उद्धरणC. Brooks John. Short Cycle Selling--Beating Your Competitors in the Sales Race. In lần thứ 1. American: MC Graw Hill, 2002.
एमएलए उद्धरणC. Brooks John. Short Cycle Selling--Beating Your Competitors in the Sales Race. In lần thứ 1. American: MC Graw Hill, 2002.
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