1. American Psychological Association: Taxonomy of educational outcomes (Bloom, Krathwohl et al.), circa 1956
2. Technical Report;JR Anderson,1978
3. Cousteau, J. Y.: A race between school and cradle. Keynote presentation to the International Forum on Scientific and Technological Literacy for All., Paris, France, UNESCO 1993, July 3
4. Dale, E.: Audio-visual education: The cone of experience. Columbus, OH, The Ohio State University, circa 1960
5. Dyrenfurth, M., Kozak, M. (eds.): Technological literacy. Council on Technology Teacher Education Yearbook. Peoria, IL, Glencoe 1991