APA (7th ed.) Citation

Knowles, M. S., Holton, E. F., & Swanson, R. A. (2015). The adult learner: The definitive classic in adult education and human resource development (8th ed.). Routledge.

Chicago Style (17th ed.) Citation

Knowles, Malcolm S., Elwood F. Holton, and Richard A. Swanson. The Adult Learner: The Definitive Classic in Adult Education and Human Resource Development. 8th ed. London ; New York: Routledge, 2015.

MLA (8th ed.) Citation

Knowles, Malcolm S., et al. The Adult Learner: The Definitive Classic in Adult Education and Human Resource Development. 8th ed. Routledge, 2015.