Averill, Mary. Network Marketing : The Business of the '90s / Mary Averill, Bud Corkin. - Menlo Park, Calif. : Crisp Publications, c1994. - vii, 78 p. : ill. ; 28 cm. - A Fifty-Minute series book . ISBN: 1560522445 LCCN: 94-221075 Subjects--Topical Terms: Multilevel marketing. LC Class. No.: HF5415.126 / .A94 1994 Dewey Class. No.: 658.8/4