Rerkluenrit, J., & Kochakri, R. (2020). Guideline for Promoting Active Ageing to be a Health Tourism Guide: Ageing’s Perspective, a Case Study of Phra Nakhon Si Ayutthaya Province. Journal of The Royal Thai Army Nurses, 21(3), 473–480. retrieved from https://he01.tci-thaijo.org/index.php/JRTAN/article/view/234288