APA (7 वां संस्करण) प्रशस्ति पत्र
Walsh, T. (2011). Unlocking the gates: How and why leading universities are opening up access to their courses. Princeton University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Walsh, Taylor. Unlocking the Gates: How and Why Leading Universities Are Opening Up Access to Their Courses. Princeton: Princeton University Press, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Walsh, Taylor. Unlocking the Gates: How and Why Leading Universities Are Opening Up Access to Their Courses. Princeton University Press, 2011.
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