Chrissutianto, Nicolas, and Ranjith Kingston Gladstone. “Sleeping Habits of Teenagers in a Multi-Cultural Community: A Case Study”. 11th International Scholars Conference 6, no. 1 (October 29, 2018): 233. Accessed July 22, 2024. https://jurnal.unai.edu/index.php/isc/article/view/1151.