Ungcharoen, Ratchadaporn, Acharaporn Seeherunwong, Ronnachai Kongsakon, and Dusit Sujirarat. 2014. “Perceived behavioral controls and intention to quit smoking among vocational college students with nicotine addiction and non-addiction”. Journal of Public Health and Development 12 (3). Bangkok, Thailand:17-29. https://he01.tci-thaijo.org/index.php/AIHD-MU/article/view/27765.