Saelee , C., T. Thiamudomlerk, and V. Chananon. “Cost and Sensitivity Analysis of Herbal Inhaler Investment Project : A Case Study of Chadatong Herbal Inhaler, Wabellas Community Enterprise Group”. Business Administration and Economics Review, vol. 19, no. 2, Aug. 2023, pp. 144-61, https://so15.tci-thaijo.org/index.php/bae/article/view/374.