1. Barr, R. (2008). Google and GI science: Revolution, evolution or wild goose?. London: Centre for Advanced Spatial Analysis Seminar, University College London 30th January 2008.
2. Buckley, A. R., Gahegan, M., & Clarke, K. (2004). Geographic visualization. In R. B. Mcmaster, & E. L. Usery (Eds.) A research agenda for geographic information science. Boca Raton, Fl: CRC.
3. Corver, M. (2005). Young Participation in Higher Education. HEFCE 2005/03. Bristol: HEFCE.
4. de Smith, M. J., Goodchild, F. M., & Longley, P. A. (2008). Geospatial analysis: A comprehensive guide to principles, techniques and software tools (2nd ed.). Leicester: The Winchelsea/Troubador.
5. Dibiase, D. (1990). Visualization in the earth sciences. Bulletin of Earth and Mineral Sciences, Pennsylvania State University, 59(2), 13–18.