Cita APA (7a ed.)

Colvin, G. (2007). 7 steps for developing a proactive schoolwide discipline plan: A guide for principals and leadership teams. Corwin Press.

Cita Chicago Style (17a ed.)

Colvin, Geoffrey. 7 Steps for Developing a Proactive Schoolwide Discipline Plan: A Guide for Principals and Leadership Teams. Thousand Oaks, CA: Corwin Press, 2007.

Cita MLA (9a ed.)

Colvin, Geoffrey. 7 Steps for Developing a Proactive Schoolwide Discipline Plan: A Guide for Principals and Leadership Teams. Corwin Press, 2007.