Osborne, M. P. (2011). Sea monsters: A nonfiction companion to magic tree house #39: dark day in the deep sea.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOsborne, Mary Pope. Sea Monsters: A Nonfiction Companion to Magic Tree House #39: Dark Day in the Deep Sea. 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रOsborne, Mary Pope. Sea Monsters: A Nonfiction Companion to Magic Tree House #39: Dark Day in the Deep Sea. 2011.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.