Piano Guys (Musical group) & Piano Guys (Musical group). (2013). A family Christmas. Portrait.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPiano Guys (Musical group) और Piano Guys (Musical group). A Family Christmas. New York, N.Y.: Portrait, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPiano Guys (Musical group) और Piano Guys (Musical group). A Family Christmas. Portrait, 2013.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.