APA (7th ed.) Citation

Saint John's Abbey Church (Collegeville, Minn.). Gregorian Chant Schola, Ignatius Press, Milan Entertainment (Firm), ADA Distribution (Firm), & Ruff, A. (2015). Mary and her son: Gregorian chant. Milan Entertainment, Inc. ; distributed in the USA by ADA.

Chicago Style (17th ed.) Citation

Saint John's Abbey Church (Collegeville, Minn.). Gregorian Chant Schola, Ignatius Press, Milan Entertainment (Firm), ADA Distribution (Firm), and Anthony Ruff. Mary and Her Son: Gregorian Chant. [London]: Milan Entertainment, Inc. ; distributed in the USA by ADA, 2015.

MLA (8th ed.) Citation

Saint John's Abbey Church (Collegeville, Minn.). Gregorian Chant Schola, et al. Mary and Her Son: Gregorian Chant. Milan Entertainment, Inc. ; distributed in the USA by ADA, 2015.