APA (7th ed.) Citation

Krouse, W. J., & Richardson, D. J. (2015). Mass Murder With Firearms: Incidents and Victims, 1999-2013. Congressional Research Service.

Chicago Style (17th ed.) Citation

Krouse, William J., and Daniel J. Richardson. Mass Murder With Firearms: Incidents and Victims, 1999-2013. [Erscheinungsort nicht ermittelbar]: Congressional Research Service, 2015.

MLA (9th ed.) Citation

Krouse, William J., and Daniel J. Richardson. Mass Murder With Firearms: Incidents and Victims, 1999-2013. Congressional Research Service, 2015.