References
^ Norman Hall's Police Exam Preparation Book : Everything You Need to Know Thoroughly Covered in One Book by Norman Hall (2003, Paperback) ISBN 9781580628426 (revised Sep 2024)^ Hall, Norman S. (2014). Norman Hall's Police Exam Preparation Book : Everything You Need to Know Thoroughly Covered in One Book, Adams Media Corp. BiggerBooks. ISBN 9781580628426 (revised Aug 2024)
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