Kaewsaard, Kittiya. “Illustrations to the Souvenir Product Creation of the Lao Khrang Ethnic Group”. Research and Development Journal, Loei Rajabhat University 16, no. 57 (July 19, 2021): 1–9. accessed September 29, 2026. https://so05.tci-thaijo.org/index.php/researchjournal-lru/article/view/250620.