APA (7th ed.) Citation

Piano Guys (Musical group) & Piano Guys (Musical group). (2013). A family Christmas. Portrait.

Chicago Style (17th ed.) Citation

Piano Guys (Musical group) and Piano Guys (Musical group). A Family Christmas. New York, N.Y.: Portrait, 2013.

MLA (8th ed.) Citation

Piano Guys (Musical group) and Piano Guys (Musical group). A Family Christmas. Portrait, 2013.

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