Richard H. Girgenti. NYS Division of Criminal Justice Services. (1983) 464 pages.
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David Lovell, Unpublished. University of Washington. (ca. 2010) 16 pages.
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Robert Martinson, Ted Palmer, Stuart Adams. National Council on Crime and Delinquency. (1976) 93 pages.
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Unpublished paper by Fritz Redl. August 8, (1958) 32 pages.
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Seattle Police. Katrina C. Pflaumer. April 21 (2004) 45 pages.
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Gurth Higgin and Harold Bridger. Tavistock Pamphlet 10. (1965) 64 pages.
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