Knowles, Malcolm S. 1913-1997 The adult learner : the definitive classic in adult education and human resource development / Malcolm S. Knowles, Elwood F. Holton III, Richard A. Swanson. - 9th ed. - Amsterdam ; Boston : Elsevier, c2020. - xii, 378 p. : ill ; 23 cm. ISBN: 1-000-07289-4 LCCN: 2004024356 Subjects--Topical Terms: Adult learningAdult educationTraining Dewey Class. No.: 374