Chielie และ Ruokuobeinuo. (1995) Study on behavioral change among truck drivers and their HIV infection risk, in Saraburi. Mahidol University,:ม.ป.ท.Chielie และ Ruokuobeinuo. 1995. Study on behavioral change among truck drivers and their HIV infection risk, in Saraburi. ม.ป.ท.:Mahidol University,;Chielie และ Ruokuobeinuo. Study on behavioral change among truck drivers and their HIV infection risk, in Saraburi. ม.ป.ท.:Mahidol University, 1995. Print.