Walker, S. (1993). Taming the system: The control of discretion in criminal justice, 1950-1990. Oxford University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWalker, Samuel. Taming the System: The Control of Discretion in Criminal Justice, 1950-1990. New York: Oxford University Press, 1993.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWalker, Samuel. Taming the System: The Control of Discretion in Criminal Justice, 1950-1990. Oxford University Press, 1993.
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