Dyfyniad APA

Statistical Journal of the UN Economic Commission for Europe. IOS Press.

Dyfyniad Arddull Chicago

Statistical Journal of the UN Economic Commission for Europe. IOS Press.

Dyfyniad MLA

Statistical Journal of the UN Economic Commission for Europe. IOS Press.

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