Fourplay (Musical group), James, B., East, N., Loeb, C., & Mason, H. (2010). Let's touch the sky. Heads Up International.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFourplay (Musical group), Bob James, Nathan East, Chuck Loeb, और Harvey Mason. Let's Touch the Sky. Beverly Hills, CA: Heads Up International, 2010.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFourplay (Musical group), et al. Let's Touch the Sky. Heads Up International, 2010.
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