1. Contamination of specimen container surfaces during sputum collection;Allen;Journal of Clinical Pathology,1983
2. The Non-value of sputum culture in the diagnosis of pneumococcal pneumonia;Barrett-Connor;The American Review of Respiratory Diseases,1971
3. Lessons learned about pneumonic plague diagnosis from two outbreaks in the Democratic Republic of Congo;Bertherat;Emerging Infectious Diseases,2011
4. Centers for Disease Control and Prevention 2006 Direct Smear Microscopy Training Package http://www.phppo.cdc.gov/dls/ila/acidfasttraining/
5. Centers for Disease Control and Prevention 2011 Core Curriculum on Tuberculosis http://www.cdc.gov/tb/education/corecurr/pdf/corecurr_all.pdf