Sriphothong, Wanni, and Prayut Teansat. “Condom Use in Female Sex-workersม Ratchaburi, 1991”. Journal of Health Science of Thailand 2, no. 1 (March 29, 1993): 1–6. Accessed December 8, 2025. https://www.thaidj.org/index.php/JHS/article/view/6143.