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2. Butts R. Freeman (1939). The College Charts Its Course. New York: McGraw-Hill. Butts R. Freeman (1939). The College Charts Its Course. New York: McGraw-Hill.
3. General Education in a Free Society (1945). Cambridge (Mass.): Harvard University Press. General Education in a Free Society (1945). Cambridge (Mass.): Harvard University Press.
4. Hawkins Hugh (1972). Between Harvard and America. New York: Oxford University Press. Hawkins Hugh (1972). Between Harvard and America. New York: Oxford University Press.
5. Kolesnik Walter B. (1958). Mental Discipline in Modern Education. Madison: University of Wisconsin Press. Kolesnik Walter B. (1958). Mental Discipline in Modern Education. Madison: University of Wisconsin Press.