1. Carroll, J.M. The Nurnberg Funnel: Designing Minimalist Instruction for Practical Computer Skill. MIT Press, 1990
2. Gagne, R.M., L.J. Briggs, and W. Wagner. Principles of Instructional Design, 3rd ed. Holt, Rinehart and Winston, 1988.
3. Guide 3.0 is a product of OWL International, Inc., 2800 156th Ave., SE., Bellevue, WA 98007–9949.
4. J. Nielsen. HyperText & HyperMedia. Academic Press, 1989.
5. Spinnaker Plus is a product of Spinnaker Software Corporation, 201 Broadway, Cambridge, MA 02139