Brennan, Charles D. Take your sales to the next level : advanced skills to build stronger relationships and close more deals / Charles D. Brennan Jr. - New York : McGraw-Hill, 2011 - v, 215 p. : ill. ; 23 cm. Includes index. ISBN: 9780071745437 (pbk.) RM62.00 Subjects--Topical Terms: Relationship marketing.Selling.Sales management.