1. Abelson, R. P. A. A technique and a model for multidimensional attitude scaling. Public Opinion Quarterly, 1954, 15, 405–418.
2. Appleyard, D. Styles and methods of structuring a city. Environment and Behavior, 1970, 2, 100–117.
3. Bannister, D. & Mair, J. M. The Evaluation of Personal Constructs. London: Academic Press, 1968.
4. Beck, R., & Wood, D. Comparative developmental analysis of individual and aggregated cognitive maps of London. In G. T. Moore & R. G. Golledge (Eds.), Environmental knowing. Stroudsburg, Pa.: Dowden, Hutchinson and Ross, 1976. Pp. 173–184.
5. Briggs, R. Cognitive distance in urban space. Ph.D. dissertation. Department of Geography, Ohio State University, Columbus, Ohio, 1972.