Mahmudah, M., Munzil, M. and Yulianti, E. (2018) “Validity and Reliability Study of Science-Edutainment Interactive Multimedia on Earth Topic for the 7th Graders of Junior High Schools”, Jurnal Penelitian Fisika dan Aplikasinya (JPFA), 8(1), pp. 42–50. doi: 10.26740/jpfa.v8n1.p42-50.