APA (7th ed.) Citation

Marian Congress at Ottawa. (1947). Prayers and hymns. [publisher not identified].

Chicago Style (17th ed.) Citation

Marian Congress at Ottawa. Prayers and Hymns. [Ottawa, Ont.]: [publisher not identified], 1947.

MLA (8th ed.) Citation

Marian Congress at Ottawa. Prayers and Hymns. [publisher not identified], 1947.

Warning: These citations may not always be 100% accurate.