Crockett, T. S. (1968). Law enforcement education: A survey and discussion of law enforcement education in the United States. Internat. Assoc. of Chiefs of Police, Professional Standards Div..

Crockett, Thompson S. Law Enforcement Education: A Survey and Discussion of Law Enforcement Education in the United States. Wash.: Internat. Assoc. of Chiefs of Police, Professional Standards Div., 1968.

Crockett, Thompson S. Law Enforcement Education: A Survey and Discussion of Law Enforcement Education in the United States. Internat. Assoc. of Chiefs of Police, Professional Standards Div., 1968.