Catholic Church. National Conference of Catholic Bishops. Bishops' Committee on the Liturgy & United States Catholic Conference. (1977). A call to prayer: The Liturgy of the hours. U.S. Catholic Conference.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিCatholic Church. National Conference of Catholic Bishops. Bishops' Committee on the Liturgy এবং United States Catholic Conference. A Call to Prayer: The Liturgy of the Hours. Washington, DC: U.S. Catholic Conference, 1977.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিCatholic Church. National Conference of Catholic Bishops. Bishops' Committee on the Liturgy এবং United States Catholic Conference. A Call to Prayer: The Liturgy of the Hours. U.S. Catholic Conference, 1977.
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