APA (7th ed.) Citation

Böckler, N., & Böckler, N. (2013). School shootings: International research, case studies and concepts for prevention. Springer.

Chicago Style (17th ed.) Citation

Böckler, Nils, and Nils Böckler. School Shootings: International Research, Case Studies and Concepts for Prevention. New York Heidelberg [u.a.]: Springer, 2013.

MLA (8th ed.) Citation

Böckler, Nils, and Nils Böckler. School Shootings: International Research, Case Studies and Concepts for Prevention. Springer, 2013.

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