Kalyanamitra, 1998
Buku Teks
Bogdanowicz-Bindert, Christine A
Institut Bisnis, Ekonomi dan Keuangan, 1993
Buku Teks
Routledge, 1992
Buku Teks
Zulkarnain Djamin, author
LPFE-UI, 1996
Buku Teks
edited by Norman N. Barish and Michel Verhulst
Pergamon Press , 1965
Buku Teks