Aris Ananta, Muljana Soekarni, Sjamsul Arifin, editor
ISEAS, 2011
Buku Teks SO
Holland, R. William
[American Management Association;, ], 2012
eBooks
Holland, R. William
Amacom, 2012
Buku Teks
Cambridge University Press, 2003
Buku Teks
Burrows III, Robert P.
[American Management Association, ], 2012
eBooks