APA (7th ed.) Citation

GI_Forum, Salzburg, Jekel, T., & Koller, A. (2012). GI_Forum 2012: Geovisualization, society and learning: Conference proceedings. Wichmann.

Chicago Style (17th ed.) Citation

GI_Forum, Salzburg, Thomas Jekel, and Alfons Koller. GI_Forum 2012: Geovisualization, Society and Learning: Conference Proceedings. Berlin Offenbach: Wichmann, 2012.

MLA (9th ed.) Citation

GI_Forum, Salzburg, et al. GI_Forum 2012: Geovisualization, Society and Learning: Conference Proceedings. Wichmann, 2012.