Lerpongpipatkul, S. “A Survey of Attitudes of Physicians at Bangna Hospital Toward PAS (Physician-Assisted Suicide) and Euthanasia”. LEARN Journal: Language Education and Acquisition Research Network, vol. 2, Dec. 2012, pp. 105-16, https://so04.tci-thaijo.org/index.php/LEARN/article/view/102790.