Vogan, T. (2014). Keepers of the flame: NFL Films and the rise of sports media. University of Illinois Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVogan, Travis. Keepers of the Flame: NFL Films and the Rise of Sports Media. Urbana, Illinois: University of Illinois Press, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVogan, Travis. Keepers of the Flame: NFL Films and the Rise of Sports Media. University of Illinois Press, 2014.
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