APA (7 वां संस्करण) प्रशस्ति पत्र
O'Brien, D. (2004). Gk with Derek the ultimate general knowledge and quiz compendium: Literature and mythology. Penguin Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
O'Brien, Derek. Gk with Derek the Ultimate General Knowledge and Quiz Compendium: Literature and Mythology. New Delhi: Penguin Books, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
O'Brien, Derek. Gk with Derek the Ultimate General Knowledge and Quiz Compendium: Literature and Mythology. Penguin Books, 2004.
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