SpringerLink (Online service) & Wrycza, S. (2011). Research in Systems Analysis and Design: Models and Methods: 4th SIGSAND/PLAIS EuroSymposium 2011, Gdańsk, Poland, September 29, 2011, Revised Selected Papers. Springer Berlin Heidelberg : Imprint: Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service) και Stanisław Wrycza. Research in Systems Analysis and Design: Models and Methods: 4th SIGSAND/PLAIS EuroSymposium 2011, Gdańsk, Poland, September 29, 2011, Revised Selected Papers. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2011.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service) και Stanisław Wrycza. Research in Systems Analysis and Design: Models and Methods: 4th SIGSAND/PLAIS EuroSymposium 2011, Gdańsk, Poland, September 29, 2011, Revised Selected Papers. Springer Berlin Heidelberg : Imprint: Springer, 2011.
