Gladys Knight and the Pips & Pips (Musical group). (2008). The definitive collection. Motown Records : Distributed by Universal Music Distribution.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGladys Knight and the Pips और Pips (Musical group). The Definitive Collection. New York: Motown Records : Distributed by Universal Music Distribution, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGladys Knight and the Pips और Pips (Musical group). The Definitive Collection. Motown Records : Distributed by Universal Music Distribution, 2008.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.