World Health Organization Patient Safety. (2009). WHO guidelines for safe surgery 2009: Safe surgery saves lives. World Health Organization Patient Safety.
Cita Chicago Style (17a ed.)World Health Organization Patient Safety. WHO Guidelines for Safe Surgery 2009: Safe Surgery Saves Lives. [Place of publication not identified]: World Health Organization Patient Safety, 2009.
Cita MLA (9a ed.)World Health Organization Patient Safety. WHO Guidelines for Safe Surgery 2009: Safe Surgery Saves Lives. World Health Organization Patient Safety, 2009.
Precaución: Estas citas no son 100% exactas.