Coffey, A. (1990). Law enforcement: A human relations approach. Prentice Hall.
Chicago Style (17. basım) AtıfCoffey, Alan. Law Enforcement: A Human Relations Approach. Englewood Cliffs, N.J: Prentice Hall, 1990.
MLA (9th ed.) AtıfCoffey, Alan. Law Enforcement: A Human Relations Approach. Prentice Hall, 1990.
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