Cita APA (7a ed.)

Poland, S., & Ferguson, S. (2021). Lessons learned from school shootings: Perspectives from the United States of America. Springer.

Cita Chicago Style (17a ed.)

Poland, Scott, y Sara Ferguson. Lessons Learned from School Shootings: Perspectives from the United States of America. Cham, Switzerland: Springer, 2021.

Cita MLA (9a ed.)

Poland, Scott, y Sara Ferguson. Lessons Learned from School Shootings: Perspectives from the United States of America. Springer, 2021.