APA (7th ed.) Citation

Harris, D., & Simms, J. (2019). Mass shootings in America. Essential Library.

Chicago Style (17th ed.) Citation

Harris, Duchess, and Jennifer Simms. Mass Shootings in America. Minneapolis, Minnesota: Essential Library, 2019.

MLA (8th ed.) Citation

Harris, Duchess, and Jennifer Simms. Mass Shootings in America. Essential Library, 2019.

Warning: These citations may not always be 100% accurate.