References
- 1973 . “The Free and Happy Student” . Phi Delta Kappan , September : 13 – 16 .
- “The Free” . Phi Delta Kappan , 13
- Cruickshank , Donald R. , ed. 1973 . Prepared for and used at the Central Ohio Teachers Association (COTA) Meeting . October 1973 . The Ohio State University .
- Gibbons , Maurice . 1971 . Individualizing Instruction: A Descriptive Analysis , 70 New York : Teachers College Press .