APA-referens (7:e uppl.)

Holzer, J. C., Threlkeld, E., Costanza, W., Recupero, P. R., & Rainey, S. E. Comparing lone-actor terrorism to other high-threat groups. Lone-actor terrorism : an integrated framework.

Chicago-referens (17:e uppl.)

Holzer, Jacob C., Emily Threlkeld, William Costanza, Patricia R. Recupero, och Samara E. Rainey. "Comparing Lone-actor Terrorism to Other High-threat Groups." Lone-actor Terrorism : An Integrated Framework .

MLA-referens (8:e uppl.)

Holzer, Jacob C., et al. "Comparing Lone-actor Terrorism to Other High-threat Groups." Lone-actor Terrorism : An Integrated Framework, .