Cita APA (7a ed.)

Schildkraut, J., & Muschert, G. W. (2019). Columbine 20 Years Later and Beyond: Lessons from Tragedy. Praeger.

Cita Chicago Style (17a ed.)

Schildkraut, Jaclyn, y Glenn W. Muschert. Columbine 20 Years Later and Beyond: Lessons from Tragedy. [Erscheinungsort nicht ermittelbar]: Praeger, 2019.

Cita MLA (9a ed.)

Schildkraut, Jaclyn, y Glenn W. Muschert. Columbine 20 Years Later and Beyond: Lessons from Tragedy. Praeger, 2019.