Gaya APA

Knowles, M, S. (2005). The adult learner : the definitive classic in adult education and human resource development (6th ed). London: Elsevier Inc..

Gaya MLA

Knowles, Malcolm, Shepherd. "The adult learner : the definitive classic in adult education and human resource development". 6th ed London: Elsevier Inc., 2005. MP.