APA (7th ed.) Citation

Lawson, D., O'Keefe, D., & Monks of Downside Abbey. (2004). Gregorian chant. Virgin Classics.

Chicago Style (17th ed.) Citation

Lawson, David, Dustan O'Keefe, and Monks of Downside Abbey. Gregorian Chant. [London]: Virgin Classics, 2004.

MLA (8th ed.) Citation

Lawson, David, et al. Gregorian Chant. Virgin Classics, 2004.

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