Bikker, Jacob A., author
Routledge, Taylor & Francis Group, 2008
Buku Teks
Koch, Timothy W., author
The Dryden Press, 2000
Buku Teks
Nindita Tridiyani, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2011
UI - Tesis (Open)
Elliott, P.A., author
Bumi Aksara , 1996
Buku Teks
Ferry Fernando, author
2017
UI - Skripsi (Membership)