Goodfellow, Rob
KHL , 1997
Buku Teks
Sato, Yuri, author
1989
UI - Tesis (Membership)
Business Advisory Indonesia, [date of publication not identified]
Buku Referensi
Djoko Purwoko, author
Fakultas Eknonomi dan Bisnis Universitas Indonesia, 2000
UI - Tesis (Membership)
Peter Salim, author
Modern English Press, 1993
Buku Referensi