APA (7th ed.) Citation

Society, S. G. M. (1919). [Choirs from the Roman Basilicas and the Vatican]. New York.

Chicago Style (17th ed.) Citation

Society, St. Gregory Musical. [Choirs from the Roman Basilicas and the Vatican]. New York, 1919.

MLA (8th ed.) Citation

Society, St. Gregory Musical. [Choirs from the Roman Basilicas and the Vatican]. New York, 1919.

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