Ritter, W. (2016). Ghostly echoes (First edition.). Algonquin Young Readers, an imprint of Algonquin Books of Chapel Hill, a division of Workman Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRitter, William. Ghostly Echoes. First edition. Chapel Hill, North Carolina: Algonquin Young Readers, an imprint of Algonquin Books of Chapel Hill, a division of Workman Publishing, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRitter, William. Ghostly Echoes. First edition. Algonquin Young Readers, an imprint of Algonquin Books of Chapel Hill, a division of Workman Publishing, 2016.
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