Prawiranegara, Hendrayatna. “PENGEMBANGAN BAHAN PEMBELAJARAN PENGENALAN MATEMATIKA DASAR BERBASIS KOMPUTER BAGI ANAK USIA DINI: THE DEVELOPMENT OF COMPUTER-BASED BASIC MATH LEARNING MATERIAL FOR EARLY CHILDHOOD”. JIV-Jurnal Ilmiah Visi, vol. 14, no. 1, June 2019, pp. 67-74, doi:10.21009/JIV.1401.7.