Toemjai, Thawatchai, and Saowalak Chaichok. “Factors Affecting Billing Performance of Revenue Collective Center, Government Hospital in Si Sa Ket Province”. Journal of Health Policy, Law and Administration 9, no. 3 (September 16, 2023): 515–528. accessed September 13, 2026. https://so05.tci-thaijo.org/index.php/journal_law/article/view/266998.