Artikel Jurnal
Aris Ananta, Muljana Soekarni, Sjamsul Arifin, editor
ISEAS, 2011
Buku Teks
Holland, R. William, author
Amacom, 2012
Buku Teks
Holland, R. William
[American Management Association;, ], 2012
eBooks
Cambridge University Press, 2003
Buku Teks