Australian council of social service, 0
Buku Teks
Lastya Saad, author
Universitas Indonesia, 1994
UI - Skripsi (Membership)
Ministry of culture and information, 1970
Buku Referensi
Buddingh, C.
De Bezige Bij, 1979
Buku Teks
General Agreement on Tariffs and Trade, 1971
Buku Teks