Holzer, J. C., Dew, A. J., Recupero, P. R., & Gill, P. Developing a risk assessment and intervention strategy: Future directions in research and practice. Lone-actor terrorism : an integrated framework.

Holzer, Jacob C., Andrea J. Dew, Patricia R. Recupero, and Paul Gill. "Developing a Risk Assessment and Intervention Strategy: Future Directions in Research and Practice." Lone-actor Terrorism : An Integrated Framework .

Holzer, Jacob C., et al. "Developing a Risk Assessment and Intervention Strategy: Future Directions in Research and Practice." Lone-actor Terrorism : An Integrated Framework, .