SpringerLink (Online service), Ligozat, G., Montello, D. R., Knauff, M., & Barkowsky, T. (2008). Spatial cognition V reasoning, action, interaction: International Conference Spatial Cognition 2006, Bremen, Germany, September 24-28, 2006, Revised Selected Papers. Springer-Verlag Berlin Heidelberg.
Chicago-referens (17:e uppl.)SpringerLink (Online service), Gérard Ligozat, Daniel R. Montello, Markus Knauff, och Thomas Barkowsky. Spatial Cognition V Reasoning, Action, Interaction: International Conference Spatial Cognition 2006, Bremen, Germany, September 24-28, 2006, Revised Selected Papers. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2008.
MLA-referens (8:e uppl.)SpringerLink (Online service), et al. Spatial Cognition V Reasoning, Action, Interaction: International Conference Spatial Cognition 2006, Bremen, Germany, September 24-28, 2006, Revised Selected Papers. Springer-Verlag Berlin Heidelberg, 2008.