1. Cleveland, W. S., and McGill, R. (1985) Graphical Perception and Graphical Methods for Analyzing Scientific Data.Science, 229 (4716) 828–833.
2. Cooper, P., and Galvin, K. (1984) What Do We Know about Research in Teacher Training in Instructional Strategies? Annual Meeting of the Central States Speech Association, 12–14 April, Chicago, Illinois.
3. Culliton, B. J. (1985) Briefings.Science, 10 (228) 697.
4. Fogarty, J.et al. (1983)A Descriptive Study of Experienced and Novice Teachers' Interactive Instructional Thought and Actions. Learning Research and Development Center, Pittsburg University, PA.
5. Gold, J. R. and Goodey, B. (1984)Behavioral and Perceptual Geography: Criticisms and Response.Progress in Human Geography, 6 (4) 344–550.