References
- Gordon , W. J. J. 1972 . Introduction To Synectics , Cambridge , Mass. : Synectics Education Systems .
- Gordon , W. J. J. and Poze , Tony . February 1974 . “Learning Is Connection-Making.” February , Professional Report, Croft Publication
- Sund , Robert B. and Trowbridge , Leslie W. 1974 . Student-Centered Teaching in the Secondary School , Columbus , Ohio : Charles E. Merrill Pub. Co. .