Arfanda AS , Ambiyar, Rusnardi , Erwinsyah Simanungkalit , Fakhriza (2021) “EARLY WARNING TRAINING MODEL DEVELOPMENT EARTHQUAKE WITH INTERNET OF THINGS BASED ON SETS VALIDATION”, Turkish Journal of Computer and Mathematics Education (TURCOMAT), 12(13), pp. 7369–7378. doi: 10.17762/turcomat.v12i13.10601.