Chanoop, S., P. Singchungchai, and U. Tantapong. “Unit Cost and Break-Even Point Analysis of One Day Surgery Pterygium Service in a Private Hospital”. Journal of The Royal Thai Army Nurses, vol. 25, no. 3, Dec. 2024, pp. 403-1, https://he01.tci-thaijo.org/index.php/JRTAN/article/view/263930.