SpringerLink (Online service), Freksa, C., Knauff, M., Krieg-Brückner, B., Nebel, B., & Barkowsky, T. (2005). Spatial Cognition IV. Reasoning, Action, Interaction: International Conference Spatial Cognition 2004, Frauenchiemsee, Germany, October 11-13, 2004, Revised Selected Papers. Springer Berlin Heidelberg.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Christian Freksa, Markus Knauff, Bernd Krieg-Brückner, Bernhard Nebel, και Thomas Barkowsky. Spatial Cognition IV. Reasoning, Action, Interaction: International Conference Spatial Cognition 2004, Frauenchiemsee, Germany, October 11-13, 2004, Revised Selected Papers. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Spatial Cognition IV. Reasoning, Action, Interaction: International Conference Spatial Cognition 2004, Frauenchiemsee, Germany, October 11-13, 2004, Revised Selected Papers. Springer Berlin Heidelberg, 2005.
