You cannot close the deal without making a presentation, however, you cannot make that presentation unless you are in front of a prospective buyer. Without that buyer, your presentation and closing skill are usless.
This 2011 book is about my most successful workshop and will teach you how to find new clients, make a presentation that makes them say "I want to do business with you/your company" and what to say to close the sale.
Click here to read the Introduction - Click this.