Peak, K. J. (1995). Justice Administration Police, Court and Correction Management (2nd ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Peak, Kenneth J. Justice Administration Police, Court and Correction Management. 2nd ed. New Jersey: Prentice Hall, 1995.
Lua MLA (9ú heag.)Peak, Kenneth J. Justice Administration Police, Court and Correction Management. 2nd ed. Prentice Hall, 1995.
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