Agus Supriatna,
Krisnadwipayana University, Jakarta, Indonesia,
Indonesia
Iwan Kurniawan Subagja,
Krisnadwipayana University, Jakarta, Indonesia,
Indonesia
Azis Hakim,
Krisnadwipayana University, Jakarta, Indonesia,
Indonesia
Conrita Ermanto,
Krisnadwipayana University, Jakarta, Indonesia,
Indonesia
Akbar Ali,
Krisnadwipayana University, Jakarta, Indonesia,
Indonesia