APA (7th ed.) Citation

Paul VI, P. (1973). Tenth world day of prayer for vocations: Message, May 13, 1973. U.S. Catholic Conference.

Chicago Style (17th ed.) Citation

Paul VI, Pope. Tenth World Day of Prayer for Vocations: Message, May 13, 1973. Washington, DC: U.S. Catholic Conference, 1973.

MLA (8th ed.) Citation

Paul VI, Pope. Tenth World Day of Prayer for Vocations: Message, May 13, 1973. U.S. Catholic Conference, 1973.