Sanrung, S., Suthutvoravut, S., Patrachai, S. and Singhakajen, V. (2010) “Factors Associated with Sexual Relationship among High School Female Students in Nakhonratchasima Province”, Research Medical Journal, 33(4), pp. 259–267. available at: https://he02.tci-thaijo.org/index.php/ramajournal/article/view/152462 (accessed: 19 September 2026).