Einon, Dorothy, author
Erlangga, 2005
Buku Teks
Miller, Brian Cole, author
American Management Association, 2007
eBooks
Rendy Saptama, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2012
UI - Skripsi (Open)
Newstrom, John W., author
McGraw-Hill, 1997
Buku Teks
Miller, Brian Cole, author
[American Management Association, ], 2004
eBooks