Cita APA (7a ed.)

Douglas, K. S., & Webster, C. D. (1999). The HCR-20 Violence Risk Assessment Scheme. Criminal justice and behavior, 26(3), 373-388.

Cita Chicago Style (17a ed.)

Douglas, Kevin S., y Christopher D. Webster. "The HCR-20 Violence Risk Assessment Scheme." Criminal Justice and Behavior 26, no. 3 (1999): 373-388.

Cita MLA (9a ed.)

Douglas, Kevin S., y Christopher D. Webster. "The HCR-20 Violence Risk Assessment Scheme." Criminal Justice and Behavior, vol. 26, no. 3, 1999, pp. 373-388.