Marsh, K. (2015). The door by the staircase (First edition.). Disney Hyperion.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMarsh, Katherine. The Door by the Staircase. First edition. Los Angeles ; New York: Disney Hyperion, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMarsh, Katherine. The Door by the Staircase. First edition. Disney Hyperion, 2015.
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