Cita APA (7th ed.)

Knowles, M. S., Holton, E. F., & Swanson, R. A. (2005). The adult learner: The definitive classic in adult education and human resource development (6th ed.). Elsevier.

Cita Chicago (17th ed.)

Knowles, Malcolm S., Elwood F. Holton, i Richard A. Swanson. The Adult Learner: The Definitive Classic in Adult Education and Human Resource Development. 6th ed. Amsterdam, Boston: Elsevier, 2005.

Cita MLA (9th ed.)

Knowles, Malcolm S., et al. The Adult Learner: The Definitive Classic in Adult Education and Human Resource Development. 6th ed. Elsevier, 2005.