Author
Indonesia. Badan Penelitian dan Pengembangan Pendidikan dan Kebudayaan
2
ATA 106 Midterm Seminar Tugu, Indonesia
1
British Council
1
Deutscher Industrie- und Handelstag
1
Intensive Course on Educational Evaluation Jakarta, Indonesia
1
International Institute of Educational Planning
1
Kamar Dagang dan Industri Indonesia
1
Lembaga Penelitian Tanah
1
Perkumpulan Ekonomi Indonesia-Jerman
1
Seminar on Educational Innovation Jakarta, Indonesia
1