Cita APA (7a ed.)
Nils Böckler, T. S. School Shootings: International Research, Case Studies, and Concepts for Prevention. Springer.
Cita estilo Chicago (17a ed.)
Nils Böckler, Thorsten Seeger. School Shootings: International Research, Case Studies, and Concepts for Prevention. Nueva York, EUA: Springer.
Cita MLA (9a ed.)
Nils Böckler, Thorsten Seeger. School Shootings: International Research, Case Studies, and Concepts for Prevention. Springer.
Precaución: Estas citas no son 100% exactas.