Personal trainer manual the resource for fitness instructors / [electronic resource] : Mitchell Sudy, supervising editor. - 2nd ed. - San Diego, Calif. : American Council on Exercise, 1991. - 1 online resource. Includes bibliographical references and index. ISBN: 9780961816162 9780585063089 (electronic bk.) Subjects--Topical Terms: Personal trainers--Certification. LC Class. No.: GV428.7 / .P47 1997