Cita APA (7a ed.)

Arum, R., & Velez, M. (2012). Improving learning environments: School discipline and student achievement in comparative perspective. Stanford University Press.

Cita Chicago Style (17a ed.)

Arum, Richard, y Melissa Velez. Improving Learning Environments: School Discipline and Student Achievement in Comparative Perspective. Stanford, Calif.: Stanford University Press, 2012.

Cita MLA (8a ed.)

Arum, Richard, y Melissa Velez. Improving Learning Environments: School Discipline and Student Achievement in Comparative Perspective. Stanford University Press, 2012.