Harrington, B. (2019). Precursors of School Shootings.
Cita Chicago Style (17a ed.)Harrington, Branden. Precursors of School Shootings. 2019.
Cita MLA (9a ed.)Harrington, Branden. Precursors of School Shootings. 2019.
Precaución: Estas citas no son 100% exactas.