Puphapun, Wanpen, and Prachak Bouphan. “Administrative performance of primary health care unit chief in Nakhonratchasima province”. Asia-Pacific Journal of Science and Technology 16, no. 6 (April 19, 2017): 739–748. accessed March 6, 2026. https://so01.tci-thaijo.org/index.php/APST/article/view/83526.