E. Affandi, B. Harahap, and S. Harahap, “Application of the K-Means Clustering Algorithm to Categorize Pregnant Women’s Knowledge and Attitudes Towards Smoking During Pregnancy”, JOTECHCOM, vol. 3, no. 3, pp. 282–286, Aug. 2026, Accessed: Aug. 20, 2026. [Online]. Available: https://journal.technolabs.co.id/index.php/jotechcom/article/view/108