U. Larping, T. Chamnan, M. Wichaiwong, P. T. C. (Khuenp), and M. Somsri, “The Study Evaluation of Non-Smoking Area Development in Mahachulalongkornrajavidyalaya University”, dhammathas, vol. 18, no. 3, pp. 91–104, Dec. 2018.