Chanchai Sittipunt และ Tanin Intragumtornchai. (2005) A Randomized, controlled trial to compare the effectiveness of nortriptyline plus brief motivation counseling and motivation counseling alone for smoking cessation in Thai active smokers. Chulalongkorn University:ม.ป.ท.Chanchai Sittipunt และ Tanin Intragumtornchai. 2005. A Randomized, controlled trial to compare the effectiveness of nortriptyline plus brief motivation counseling and motivation counseling alone for smoking cessation in Thai active smokers. ม.ป.ท.:Chulalongkorn University;Chanchai Sittipunt และ Tanin Intragumtornchai. A Randomized, controlled trial to compare the effectiveness of nortriptyline plus brief motivation counseling and motivation counseling alone for smoking cessation in Thai active smokers. ม.ป.ท.:Chulalongkorn University, 2005. Print.