Suweero, Kittipong, and Wutthipong Moungnoi. “Outsourcing Decision Factors of Building Operation and Maintenance Services in Hospital Business”. Engineering and Applied Science Research 43 (November 11, 2016): 439–442. Accessed May 19, 2024. https://ph01.tci-thaijo.org/index.php/easr/article/view/70826.