Spring, J. H. (1999). Wheels in the head: Educational philosophies of authority, freedom, and culture from Socrates to human rights (2nd ed.). Boston: McGraw-Hill College.

Spring, Joel H. Wheels in the Head: Educational Philosophies of Authority, Freedom, and Culture From Socrates to Human Rights. 2nd ed. Boston: McGraw-Hill College, 1999.

Spring, Joel H. Wheels in the Head: Educational Philosophies of Authority, Freedom, and Culture From Socrates to Human Rights. 2nd ed. Boston: McGraw-Hill College, 1999.