Cita APA (7a ed.)

Williamson, S. (1987). Violence, criminal psychopaths and their victims. Canadian journal of behavioural science, 19(4), 454-463.

Cita Chicago Style (17a ed.)

Williamson, S. "Violence, Criminal Psychopaths and Their Victims." Canadian Journal of Behavioural Science 19, no. 4 (1987): 454-463.

Cita MLA (9a ed.)

Williamson, S. "Violence, Criminal Psychopaths and Their Victims." Canadian Journal of Behavioural Science, vol. 19, no. 4, 1987, pp. 454-463.