Tungphaisal, S., Chandeying, V., Sutthijumroon, S. and Krisanapan, O. (1989) “KAP on Sexual Behavior, Contraception, and STD Prevention Among Some Hat Yai Teenagers”, Thai Journal of Obstetrics and Gynaecology. Bangkok, Thailand, 1(2), pp. 109–114. available at: https://he02.tci-thaijo.org/index.php/tjog/article/view/257905 (accessed: 29 September 2026).