Chitwattanakorn, Trakul, Nantana Chavasirikultol, Nopphong Kerdngern, and Jamnean Joungtrakul. “Investigator Triangulation: A Strategy for Enhancing Trustworthiness in Qualitative Research”. Research Community and Social Development Journal 18, no. 3 (September 27, 2024): 521–532. accessed September 17, 2026. https://so04.tci-thaijo.org/index.php/NRRU/article/view/270348.