2Weisman, J. Evaluating architectural legibility - wayfinding in the built environment. Environment and Behavior[J]. vol.13 no.2. Arizona: SAGE Publications, 1981: 189-204.
3Mark,D.M..Human Factors in Geographical Information Systems[M]. London: Belhaven Press, 1993: 51-60.
4Arthur, P. & Passini, R. Wayfinding: people, signs, and architecture[M]. New York: McGraw-Hill, Ryerson, 1992: 26-39.