1. Bina Nusantara University,Research Interest Group in Educational Technology,Computer Science Department,Bandung,Indonesia
2. School of Engineering and Informatics, Institut Teknologi Bandung,Bandung,Indonesia
3. Research Interest Group in Educational Technology, Bina Nusantara University,Faculty of Humanities,Primary Teacher Education Department,Jakarta,Indonesia
4. Universitas Agung Podomoro,Entrepreneurship Department,Jakarta,Indonesia