APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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