Graduate School of International Development Nagoya University, 2007
Majalah, Jurnal, Buletin
Jannete H. Malata Silva
Directorate of research and community engagement Universitas Indonesia, 2017
Artikel Jurnal
International Development Research Center, 1981
Buku Teks
edited by T. Marzuki Jacob
Universitas Sumatera Utara, 1994
Buku Referensi
Center for International Higher Education Boston Collage,
Majalah, Jurnal, Buletin