Christensen, Mary, 1951- Be a network marketing superstar : the one book you need to make more money than you ever thought possible / [electronic resource] Mary Christensen ; with Wayne Christensen. - New York : AMACOM, c2007. - xiii, 143 p. ; 23 cm. ISBN: 0814474314 (pbk.) 9780814474310 (pbk.) Subjects--Topical Terms: Direct marketing.Multilevel marketing. LC Class. No.: HF5415.126 / .C4878 2007 Dewey Class. No.: 658.8/72