KNOWLES, M. S. H. (2005). The adult learner: : the definitive classic in adult education and human resource development. Elsevier.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKNOWLES, Malcom S. HOLTON. The Adult Learner: : The Definitive Classic in Adult Education and Human Resource Development. Elsevier, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKNOWLES, Malcom S. HOLTON. The Adult Learner: : The Definitive Classic in Adult Education and Human Resource Development. Elsevier, 2005.
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