APA (7 वां संस्करण) प्रशस्ति पत्र
Daniel, D. K. (2011). Tough as nails: The life and films of Richard Brooks. University of Wisconsin Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Daniel, Douglass K. Tough as Nails: The Life and Films of Richard Brooks. Madison, Wis.: University of Wisconsin Press, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Daniel, Douglass K. Tough as Nails: The Life and Films of Richard Brooks. University of Wisconsin Press, 2011.
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