Saensuk, N., and T. Hansakunachai. “Perceived Health Status of the Service Recipients in the Marketing Mix Affects the Decision to Choose the Annual Health Check up Service at the Thammasat Health Check-up Center”. Journal of The Royal Thai Army Nurses, vol. 26, no. 1, Apr. 2025, pp. 166-72, https://he01.tci-thaijo.org/index.php/JRTAN/article/view/274003.