Phoophong, Suprawee, Kerada Krainuwat, and Piyatida Nakagasien. “Predicting Factors of Intention to Quit Smoking among Employees in Public Health Centers, Bangkok Metropolitan Administration”. Nursing Science Journal of Thailand 38, no. 3 (October 2, 2020): 63–77. accessed September 28, 2026. https://he02.tci-thaijo.org/index.php/ns/article/view/241750.