Thayansin, Sawitri. “Respondent-Driven Sampling: Reaching Male Youth With Drug Use Experience in Thailand”. Journal of Population and Social Studies [JPSS] 20, no. 1 (July 1, 2011): 43–56. Accessed May 6, 2024. https://so03.tci-thaijo.org/index.php/jpss/article/view/84530.