Columbus, C., Vizzini, N., Rylander, C., & Call, G. (2016). Clash of the worlds (First edition.). Balzer + Bray, an imprint of HarperCollinsPublishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रColumbus, Chris, Ned Vizzini, Chris Rylander, और Greg Call. Clash of the Worlds. First edition. New York, NY: Balzer + Bray, an imprint of HarperCollinsPublishers, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रColumbus, Chris, et al. Clash of the Worlds. First edition. Balzer + Bray, an imprint of HarperCollinsPublishers, 2016.
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