Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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

Precaución: Estas citas no son 100% exactas.