Keve, P. W. (1960). The probation officer investigates: A guide to the presentence report. University of Minnesota Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKeve, Paul W. The Probation Officer Investigates: A Guide to the Presentence Report. Minneapolis: University of Minnesota Press, 1960.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKeve, Paul W. The Probation Officer Investigates: A Guide to the Presentence Report. University of Minnesota Press, 1960.
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