1. Anderson, E. J. & Fowler, H. S. (1978). The effects of selected entering behaviors and different cognitive levels of behavioral objectives on learning and retention performance in a unit on population genetics. Journal of Research in Science Teaching, 15(5), 373-379.
2. Bailey, G. D. (1977). Improving classroom instruction with means-referenced objectives. Educational Technology, 17(7), 13-15.
3. Bednar, A. K., Cunningham, D., Duffy, T. M., & Perry, J. D. (1992). Theory into practice: How do we link? In T. M. Duffy & D. H. Jonassen (Eds.), Constructivism and the technology of instruction: A conversation. Hillsdale, NJ: Lawrence Erlbaum Associates.
4. Bloom, B. S. (1956). Taxonomy of educational objectives: the classification of educational goals. New York: Longmans Green.
5. Christensen, T. K. & Osguthorpe, R. T. (2004). How Do Instructional-Design Practitioners Make Instructional-Strategy Decisions? Performance improvement quarterly, 17(3), 45-65.