1. Coldway, D. O. and Faust, G. W.,Instructional Components and Strategies. San Diego, California, Courseware, Inc., 1976.
2. Gagné, R. D.,The Conditions of Learning. New York; Holt, Reinhard and Winston, 1970.
3. Hughes, J. A., Faust, G. W., and Coldway, D. O.Classifying Instructional Objectives. San Diego, California, Courseware, Inc., 1976.
4. Markle, S. and Tieman, P., “Behavioral Analysis of Cognitive Content”. 1970.
5. Merrill, M. D. and Wood, N. D.,Instructional Strategies: A Preliminary Taxonomy. Orem, Utah; Brigham Young University and Courseware, Inc., 1975.