SpringerLink (Online service) & Wrycza, S. (2011). Research in Systems Analysis and Design: Models and Methods: 4th SIGSAND/PLAIS EuroSymposium 2011, Gdask, Poland, September 29, 2011, Revised Selected Papers. Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-25676-9
Chicago-referens (17:e uppl.)SpringerLink (Online service) och Stanisław Wrycza. Research in Systems Analysis and Design: Models and Methods: 4th SIGSAND/PLAIS EuroSymposium 2011, Gdask, Poland, September 29, 2011, Revised Selected Papers. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. https://doi.org/10.1007/978-3-642-25676-9.
MLA-referens (9:e uppl.)SpringerLink (Online service) och Stanisław Wrycza. Research in Systems Analysis and Design: Models and Methods: 4th SIGSAND/PLAIS EuroSymposium 2011, Gdask, Poland, September 29, 2011, Revised Selected Papers. Springer Berlin Heidelberg, 2011. https://doi.org/10.1007/978-3-642-25676-9.