สงวนพันธ์ุ ปรานอม. “The Process of Referral System Between hospitals.: Referral System”. Hua Hin Medical Journal 4, no. 1 (April 19, 2019): e0051. Accessed March 29, 2024. https://he01.tci-thaijo.org/index.php/hhsk/article/view/180512.