APA Style
      PERGL, R. et al (2015).
    Advances in Enterprise Engineering IX: 5th Enterprise Engineering Working Conference, EEWC 2015, Prague, Czech Republic, June 15-19, 2015, Proceedings (Ed. 1).
    Cham, Switzerland:
  Springer.
  
MLA Style
      PERGL, Robert. et al.
    "Advances in Enterprise Engineering IX: 5th Enterprise Engineering Working Conference, EEWC 2015, Prague, Czech Republic, June 15-19, 2015, Proceedings".
    Ed. 1
    Cham, Switzerland:
  Springer,
  2015.
  Text.