1. Becker, W.C., & Carnine, D.W. Direct Instruction — A behavior-based model for comprehensive educational intervention with the disadvantaged. Paper presented at the VIII Symposium on Behavior Modification, Caracas, Venezuela, February, 1978. Division of Teacher Education, University of Oregon, Eugene, Oregon.
2. Engelmann, S. Direct Instruction. Seminar presentation. AERA, Toronto, March, 1978.