Dyfyniad APA

World Health Organization. (1997). Strategies for the prevention of blindness in national programmes: A primary health care approach (Second edition.). World Health Organization.

Dyfyniad Arddull Chicago

World Health Organization. Strategies for the Prevention of Blindness in National Programmes: A Primary Health Care Approach. Second edition. Geneva: World Health Organization, 1997.

Dyfyniad MLA

World Health Organization. Strategies for the Prevention of Blindness in National Programmes: A Primary Health Care Approach. Second edition. World Health Organization, 1997.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.