Health System Profile(PDF)(s. 8-9, 12,13)2008.Health Policies and Systems Unit, Health Systems Strengthening Area (HSS/HP) of the Pan American Health Organization/World Health Organization (PAHO/WHO).Arkistoitu4.2.2016.ISBN978-92-75-33267-2 Viitattu 19.10.2012.(englanniksi)
Health System Profile(PDF)(s. 8-9, 12,13)2008.Health Policies and Systems Unit, Health Systems Strengthening Area (HSS/HP) of the Pan American Health Organization/World Health Organization (PAHO/WHO).Arkistoitu4.2.2016.ISBN978-92-75-33267-2 Viitattu 19.10.2012.(englanniksi)