Pronk, Jan P., author
Yayasan Obor Indonesia, 1993
Buku Teks
Development Cooperation Information Dept. of the Ministry of Foreign Affairs, 1994
Buku Teks
Thorp, Willard L., author
Organisation for Economic Co-operation and Development , 1964
Buku Teks
Ministry of Foreign Affairs. Development Cooperation Information Department, 1995
Buku Referensi
Poston, Richard Waverly
Harper & Row, 1962
Buku Teks