ยุววิทยาพานิช จ. and Panas-Ampol, K. (2016) “TREPONEMA PALLIDUM HEMAGGLUTINATION (TPHA)”, Journal of Associated Medical Sciences, 8(2), p. 87. available at: https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/60817 (accessed: 14 September 2026).