Keitaro Hasegawa
Kodansha International, 1986
Buku Teks SO
Iwata, Ryushi
Asian Productivity Organizations, 1982
Buku Teks SO
Institute of Southeast Asian studies, 1991
Buku Teks
2001
Majalah, Jurnal, Buletin
Rizta Rosiva Bardania
Universitas Indonesia, 2013
UI - Skripsi Membership