World Health Organization. (2003). Dots at the workplace: Guidelines for TB control activities at the workplace. World Health Organization.
Cita Chicago (17th ed.)World Health Organization. Dots at the Workplace: Guidelines for TB Control Activities at the Workplace. New Delhi: World Health Organization, 2003.
Cita MLA (8th ed.)World Health Organization. Dots at the Workplace: Guidelines for TB Control Activities at the Workplace. World Health Organization, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.