APA (7th ed.) Citation

Douglas, J. E., & Douglas, J. E. (1992). Crime classification manual: [a standard system for investigating and classifying violent crimes]. Lexington Books [u.a.].

Chicago Style (17th ed.) Citation

Douglas, John E., and John E. Douglas. Crime Classification Manual: [a Standard System for Investigating and Classifying Violent Crimes]. New York: Lexington Books [u.a.], 1992.

MLA (8th ed.) Citation

Douglas, John E., and John E. Douglas. Crime Classification Manual: [a Standard System for Investigating and Classifying Violent Crimes]. Lexington Books [u.a.], 1992.