Jeffries, S. (2021). Undercover Duke (First printing June 2021.). Zebra Books, published by Kensington Publishing Corp..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJeffries, Sabrina. Undercover Duke. First printing June 2021. New York: Zebra Books, published by Kensington Publishing Corp., 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJeffries, Sabrina. Undercover Duke. First printing June 2021. Zebra Books, published by Kensington Publishing Corp., 2021.
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