Drago-SeversonE. (2009). Leading adult learning: Supporting adult development in our schools (pp. 344). Thousand Oaks, CA: Corwin Press.
2.
KeganR. (1994). In over our heads: The mental demands of modern life. Cambridge, MA: Harvard University Press.
3.
MezirowJ. (2000). Learning to think like an adult. In MezirowJ. & Associates (Eds.), Learning as transformation: Critical perspectives on a theory in progress (pp. 3–34). San Francisco: Jossey-Bass.