Cita APA (7a ed.)

DuFour, R., & DuFour, R. B. (2012). Essentials for principals: The school leader's guide to professional learning communities at work. Solution Tree Press.

Cita Chicago Style (17a ed.)

DuFour, Richard, y Rebecca Burnette DuFour. Essentials for Principals: The School Leader's Guide to Professional Learning Communities at Work. Bloomington, Ind.: Solution Tree Press, 2012.

Cita MLA (8a ed.)

DuFour, Richard, y Rebecca Burnette DuFour. Essentials for Principals: The School Leader's Guide to Professional Learning Communities at Work. Solution Tree Press, 2012.