A. H. Hernawan
https://scholar.google.co.id/citations?user=y1GSw-0AAAAJ&hl=en

Curriculum and Educational Technology Department, Faculty of Education, Universitas Pendidikan Indonesia

A. I. Septiana
https://scholar.google.co.id/citations?user=lYVKI34AAAAJ

Software Engineering, Universitas Pendidikan Indonesia
Indonesia

I. Rachman
Department of environmental system, Faculty of environmental engineering, The University of Kitakyushu

D. Darmawan
Curriculum and Educational Technology Department, Faculty of Education, Universitas Pendidikan Indonesia

Y. Kodama
Social Studies Department, Faculty of Humanities, The University of Kitakyushu
Japan