Talisayon, Serafin D.
Institute of Southeast Asian Studies, 1989
Buku Teks
Asean University Network, 2013
Majalah, Jurnal, Buletin
Solidium, Estrella D
Foreign service institute, 1983
Buku Teks
Arief Nurwanto, author
Fakultas Teknik Universitas Indonesia, 2018
UI - Skripsi Membership
Elsevier, 2013
eBooks