Yes! I'm agree with this statement. Sales is a part of marketing or activity of marketing. Sales is the process for the company's target goal . Sale is outcome of marketing.Main things of marketing is to reach their target audience. Marketing organizations can create value for their customers in return they take the profit from them. Markketing leads value creation,value dalivery and they communicating with customer or target market.  Sales helps marketing to achieve all its goals with the expected profit from the customers.