Ishak, Muhammad Raihan, et al. “Coronary Heart Disease Risk Factors: Family History, Smoking, and Diet Among Patients at Royal Prima General Hospital”. Buletin Kedokteran & Kesehatan Prima, vol. 5, no. 1, Mar. 2026, pp. 84-91, https://jurnal.unprimdn.ac.id/index.php/bulkesprima/article/view/8113.