Andrews, D. (2007). The penguin who knew too much. Thomas Dunne Books/St. Martin's Minotaur.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAndrews, Donna. The Penguin Who Knew Too Much. New York: Thomas Dunne Books/St. Martin's Minotaur, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAndrews, Donna. The Penguin Who Knew Too Much. Thomas Dunne Books/St. Martin's Minotaur, 2007.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.