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-čujuhus (17. p.)Wrycza, Stanisław. 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-čujuhus (9. p.)Wrycza, Stanisław. 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.