Oktavianti, Dewi, Lia Kurniawaty, and Childa Kumala Azzahri. “A Qualitative Study on the Implementation of Student Collaboration through Zero-Waste Activities in Group B at TK Sahabat Bekasi”. Bulletin of Early Childhood 4, no. 1 (June 30, 2025): 103–110. Accessed April 20, 2026. https://attractivejournal.com/index.php/bec/article/view/2012.