A. Abdurrahman
https://scholar.google.co.id/citations?user=RM1U04cAAAAJ&hl=id&authuser=2

University of Lampung
Indonesia

Science Education Department

Faculty of Teacher Training and Education

University of Lampung

A. Saregar
https://scholar.google.co.id/citations?user=hvEbOAQAAAAJ&hl=id&authuser=2&oi=ao

Universitas Islam Negeri Raden Intan lampung
Indonesia

R. Umam
Kwansei Gakuin University
Japan