Dyfyniad APA

World Health Organization. (1998). Health workers manual on family planning options (Second.). World Health Organization.

Dyfyniad Arddull Chicago

World Health Organization. Health Workers Manual on Family Planning Options. Second. Geneva: World Health Organization, 1998.

Dyfyniad MLA

World Health Organization. Health Workers Manual on Family Planning Options. Second. World Health Organization, 1998.

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