Barkley, C., & Bishop, T. N. (2017). Marion and the secret letter (First Little Simon hardcover edition.). Little Simon.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBarkley, Callie, और Tracy Nishimura Bishop. Marion and the Secret Letter. First Little Simon hardcover edition. New York: Little Simon, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBarkley, Callie, और Tracy Nishimura Bishop. Marion and the Secret Letter. First Little Simon hardcover edition. Little Simon, 2017.
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