Champion, Darl H. Introduction to American policing / Darl H. Champion Sr., Michael K. Hooper. - New York : Glencoe McGraw-Hill, c2003 - xxxiii, 653 p. : ill.; 26 cm. ISBN: 0028009150 LCCN: 2003268104 LC Class. No.: HV8138 .C493 2003 / .C493 2003 Dewey Class. No.: 363.2/0973