Mulmit, P. “The Guideline for Potential Development of Wellness tourism service providers in Wellness tourist attraction management, A case study of Nong Yai Plong hot spring community, Noang Yai Plong, Phetchaburi”. Journal of Management Science Nakhon Pathom Rajabhat University, vol. 8, no. 1, June 2021, pp. 79-92, doi:10.14456/jmsnpru.2021.7.