APA (7th ed.) Citation

National Institute of Justice (U.S.). (2019). Mass shooter database. The Violence Project.

Chicago Style (17th ed.) Citation

National Institute of Justice (U.S.). Mass Shooter Database. [Saint Paul, Minn.]: The Violence Project, 2019.

MLA (9th ed.) Citation

National Institute of Justice (U.S.). Mass Shooter Database. The Violence Project, 2019.