Isfatony, G., and S. Wibawa. “PENGEMBANGAN LEMBAR KERJA SISWA BERBASIS ANDROID DI SMK”. IT-Edu : Jurnal Information Technology and Education, Vol. 5, no. 01, Jan. 2021, pp. 344-5, https://ejournal.unesa.ac.id/index.php/it-edu/article/view/37494.