Atwood, Christee Gabour
Manager skills training / Christee Gabour Atwood
ASTD Press, 2008
 Buku Teks
Bennett, Willard E.
Manager selection, education and training
McGraw-Hill, 1959
 Buku Teks
Scott, John
Effective management skills : what is a manager?
Spere British Institute of Management, 1984
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Orey, Maureen
Communication skills training
ATD Press, 2015
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Orey, Maureen
Communication skills training
American Society for Training and Development Press;, 2004
 eBooks