APA (7th ed.) Zitazioa
Douglas, J. E. (2013). Crime classification manual: A standard system for investigating and classifying violent crimes (3rd ed.). Wiley.
Chicago Style (17th ed.) Zitazioa
Douglas, John E. Crime Classification Manual: A Standard System for Investigating and Classifying Violent Crimes. 3rd ed. Hoboken, N.J.: Wiley, 2013.
MLA (9th ed.) Zitazioa
Douglas, John E. Crime Classification Manual: A Standard System for Investigating and Classifying Violent Crimes. 3rd ed. Wiley, 2013.
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