Suthutvoravut, Somsak, and Nittiya Duangjai. “Comparison of Knowledge, Attitude and Sexual Behavior Between High School Students Who Did and Did Not Participated in Friend Corner Project”. Research Medical Journal 38, no. 2 (June 29, 2015): 88–99. accessed September 19, 2026. https://he02.tci-thaijo.org/index.php/ramajournal/article/view/62976.