Goleman, Daniel
Harvard Business School press, 2001
Buku Teks
edited by Edward T. Reilly
[American Management Association, ], 2013
eBooks
Fernandez, Juan Antonio
John Wiley & Sons (Asia), 2006
Buku Teks
Reilly, Edward T.
American Management Association, 2013
eBooks
Hagve, D.C.
English Longvage Book Society and Longman Group , 1969
Buku Teks