Gray, N., Watt, A., Hassan, S., & Macculloch, M. J. (2003). Behavioral Indicators of Sadistic Sexual Murder Predict the Presence of Sadistic Sexual Fantasy in a Normative Sample. Journal of Interpersonal Violence, 18(9), pp. 1018-1034. doi:10.1177/0886260503254462

Gray, Nicola, Andrew Watt, Shelley Hassan, and Malcolm J. Macculloch. "Behavioral Indicators of Sadistic Sexual Murder Predict the Presence of Sadistic Sexual Fantasy in a Normative Sample." Journal of Interpersonal Violence 18, no. 9 (2003): 1018-1034.

Gray, Nicola, Andrew Watt, Shelley Hassan, and Malcolm J. Macculloch. "Behavioral Indicators of Sadistic Sexual Murder Predict the Presence of Sadistic Sexual Fantasy in a Normative Sample." Journal of Interpersonal Violence 18.9 (2003): 1018-1034.