Catholic Church & Catholic Church. National Conference of Catholic Bishops. Bishops' Committee on the Liturgy. (1971). General instruction on the Liturgy of the Hours: With an introduction and survey. National Conference of Catholic Bishops. Committee on the Liturgy.
Chicago (17e ed.) BronvermeldingCatholic Church en Catholic Church. National Conference of Catholic Bishops. Bishops' Committee on the Liturgy. General Instruction on the Liturgy of the Hours: With an Introduction and Survey. Washington, D.C.: National Conference of Catholic Bishops. Committee on the Liturgy, 1971.
MLA (8e ed.) BronvermeldingCatholic Church en Catholic Church. National Conference of Catholic Bishops. Bishops' Committee on the Liturgy. General Instruction on the Liturgy of the Hours: With an Introduction and Survey. National Conference of Catholic Bishops. Committee on the Liturgy, 1971.