“STUDI LITERATUR DAMPAK PENGGUNAAN GADGET TERHADAP PERKEMBANGAN KOGNITIF ANAK USIA PRASEKOLAH”. Proceeding of Sari Mulia University Nursing National Seminars, vol. 2, no. 1, June 2021, pp. 25-39, https://ocs.unism.ac.id/index.php/PROKEP/article/view/192.