Deplu, , 1987
Buku Referensi
Dep. Luar Negeri, 1993
Buku Teks
Media Amora, author
2010
UI - Tesis (Open)
edited by Ponciano Intal, Jr. and Lydia Ruddy
ERIA (Economic Research Institute for ASEAN and East Asia), 2017
Buku Teks
James F. Case and Vernon E. Stiers
Macmillan, 1971
Buku Teks