Boontim, Napalai. 2021. “Cost and Return of Candle Fabric of Professional Woman’s Group Ban Lao Neng in Khao Kho District, Phetchabun Province”. Research and Development Journal, Loei Rajabhat University 16 (58):25-33. https://so05.tci-thaijo.org/index.php/researchjournal-lru/article/view/250011.