World Health Organization. (2011). Tuberculosis prevalence surveys: A handbook. World Health Organization.
Cita Chicago Style (17a ed.)World Health Organization. Tuberculosis Prevalence Surveys: A Handbook. Geneva, Switzerland: World Health Organization, 2011.
Cita MLA (8a ed.)World Health Organization. Tuberculosis Prevalence Surveys: A Handbook. World Health Organization, 2011.
Precaución: Estas citas no son 100% exactas.