Thammakawinwong, N., and E. Chaipin. “Development Direction for Smoke Free University of Lampang Rajabhat University”. Journal of The Royal Thai Army Nurses, vol. 23, no. 2, Oct. 2022, pp. 381-9, https://he01.tci-thaijo.org/index.php/JRTAN/article/view/249969.