Thepaksorn, P., S. Pongpanich, R. S. Chapman, and W. Siriwong. “Determining Occupational Health Risks at a Roofing Cement Processing Factory in Southern Thailand”. Journal of Health Research, vol. 27, no. 3, May 2017, pp. 172-80, https://he01.tci-thaijo.org/index.php/jhealthres/article/view/87899.