3. Zig Ziglar, Brian Tracy, and Tom Reilly are all well-known authors and speakers on the subject of closing the sale. Access each of their Web sites—www.zigziglar.com, www.briantracy.com, and www.tomreillytraining.com—and research the books, courses, and videos they have available for companies and individuals to purchase, and learn more about closing the sale. Prepare a summary of what you find available. Does the material in this chapter parallel the kind of information these individuals present?