Dyfyniad APA

World Health Organization. (1998). Health 21: Health for all in the 21st century. World Health Organization.

Dyfyniad Arddull Chicago

World Health Organization. Health 21: Health for All in the 21st Century. Denmark: World Health Organization, 1998.

Dyfyniad MLA

World Health Organization. Health 21: Health for All in the 21st Century. World Health Organization, 1998.

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