Stroud, J. (2007). Ptolemy's gate (1st U.S. pbk. ed.). Miramax Books/Hyperion Books For Children.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStroud, Jonathan. Ptolemy's Gate. 1st U.S. pbk. ed. New York: Miramax Books/Hyperion Books For Children, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रStroud, Jonathan. Ptolemy's Gate. 1st U.S. pbk. ed. Miramax Books/Hyperion Books For Children, 2007.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.