The University of Chicago Press,
Majalah, Jurnal, Buletin
The officer of Education Research and Development Ministry of National Education,
Majalah, Jurnal, Buletin
Seikei University, 2008
Majalah, Jurnal, Buletin
Pradana Setya Kusuma, author
2011
UI - Skripsi (Open)
Engkoswara, author
Yayasan Amal Keluarga, 2002
Buku Teks