Khongtong, W., S. Khumsaoad, and S. Sukon. “Effectiveness of applying self-control theory and social support theory to develop condom usage behavior for homosexuals joining the Power of Violet group in Phatthalung province (Thai)”. Asia-Pacific Journal of Science and Technology, vol. 14, no. 10, Apr. 2017, pp. 939-4, https://so01.tci-thaijo.org/index.php/APST/article/view/83573.