The Liber Usualis contains only two other settings, designated as "Credo V" and "Credo VI," which is far fewer than for other settings of the Ordinary.
Liber Usualis sisaldab vaid kaks muud seadet, millele viidatakse kui "Credo V" ja "Credo VI," mida on palju vähem kui teisi ordinaariumi seadeid.