Bam และ Dirch Singh. (1991) A hospital based case-control study of behavioral risk factors for adult pulmonary tuberculosis in Thailand. Mahidol University,:ม.ป.ท.Bam และ Dirch Singh. 1991. A hospital based case-control study of behavioral risk factors for adult pulmonary tuberculosis in Thailand. ม.ป.ท.:Mahidol University,;Bam และ Dirch Singh. A hospital based case-control study of behavioral risk factors for adult pulmonary tuberculosis in Thailand. ม.ป.ท.:Mahidol University, 1991. Print.