Astuti, Budi, Sugiyatno Sugiyatno, and Siti Aminah. “The Development of Early Childhood Sex Education Materials for Early Childhood Education (ECE) Teachers”. JPPM (Jurnal Pendidikan dan Pemberdayaan Masyarakat) 4, no. 2 (November 29, 2017): 113–120. Accessed May 13, 2025. https://journal.uny.ac.id/index.php/jppm/article/view/14869.