Wibawa, Widyastuti TM. Improved Communication of Parents and Teachers by Using Android-Based Applications as a Media for Forming Character Children at an Early Age in Elementary School SD. Taman Sari 3 Yogyakarta. IJETS [Internet]. 2019Dec.20 [cited 2024Nov.22];1(2):31 -36. Available from: https://journal.uty.ac.id/index.php/IJETS/article/view/48