World Health Organization. (2000). The world health report 2000 health systems: Improving performance. World Health Organization.
Dyfyniad Arddull ChicagoWorld Health Organization. The World Health Report 2000 Health Systems: Improving Performance. Geneva: World Health Organization, 2000.
Dyfyniad MLAWorld Health Organization. The World Health Report 2000 Health Systems: Improving Performance. World Health Organization, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.