Adela Anita, Hermanto Tinambunan, Andriani Effendi, and Gabriel Gloria Ohee. “Small Investment, Big Impact: Engineering Economics Study on Early Childhood Education Infrastructure in the Era of Sustainable Development”. Jurnal Ilmu Sosial dan Humaniora 1, no. 3 (July 19, 2025): 702–710. Accessed October 31, 2025. https://indojurnal.com/index.php/jisoh/article/view/659.