DAVID WALLIAMS. (2015). THE AMAZING ADVENTURES: GRANDPA'S GREAT ESCAPE. HARPERCOLLINS CHILDREN'S BOOKS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDAVID WALLIAMS. THE AMAZING ADVENTURES: GRANDPA'S GREAT ESCAPE. LONDON: HARPERCOLLINS CHILDREN'S BOOKS, 2015.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDAVID WALLIAMS. THE AMAZING ADVENTURES: GRANDPA'S GREAT ESCAPE. HARPERCOLLINS CHILDREN'S BOOKS, 2015.
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