Chang, P. S. J. (2013). Comparison of the clinical presentation, biochemical parameters and post treatment outcome between the young coronary artery disease patient (>45 years old) and the elderly coronary artery disease patient (>65 years old) in Sarawak. Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Chang, Patrick Siong Junk. Comparison of the Clinical Presentation, Biochemical Parameters and Post Treatment Outcome Between the Young Coronary Artery Disease Patient (>45 Years Old) and the Elderly Coronary Artery Disease Patient (>65 Years Old) in Sarawak. Kuala Lumpur: Universiti Kebangsaan Malaysia, 2013.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Chang, Patrick Siong Junk. Comparison of the Clinical Presentation, Biochemical Parameters and Post Treatment Outcome Between the Young Coronary Artery Disease Patient (>45 Years Old) and the Elderly Coronary Artery Disease Patient (>65 Years Old) in Sarawak. Universiti Kebangsaan Malaysia, 2013.