T, Pimsak, Chaikoolvatana A, and Pheunpha P. 2015. “Quit Smoking Behavior of Current Smokers: A Case Study at Pharsai Clinic, Ubon Ratchathani University”. Srinagarind Medical Journal 30 (3):282-91. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/39307.