FEUI, 2007
Majalah, Jurnal, Buletin
Fakultas ekonomi, 2012
Majalah, Jurnal, Buletin
Chua, Beng Huat
[Publisher not identified], 2002
Artikel Jurnal
edited by Denis Dwyer
Longman, 1990
Buku Teks
Jakarta : KITLV (Royal Netherlands Institute of Southeast Asia and Caribbean Studies)
Majalah, Jurnal, Buletin