Roy, R., & Pittu, D. (2007). A to z mysteries, books d-g: The deadly dungeon / the empty envelope / the falcon's feathers / the goose's gold (Unabridged.). Listening Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRoy, Ron, और David Pittu. A to Z Mysteries, Books D-g: The Deadly Dungeon / the Empty Envelope / the Falcon's Feathers / the Goose's Gold. Unabridged. New York: Listening Library, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRoy, Ron, और David Pittu. A to Z Mysteries, Books D-g: The Deadly Dungeon / the Empty Envelope / the Falcon's Feathers / the Goose's Gold. Unabridged. Listening Library, 2007.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.