Evaluations of Process Modeling Grammars
  MLA
  Recker, Jan, John Mylopoulos, and Norman M Sadeh. Evaluations of Process Modeling Grammars. Springer Berlin Heidelberg, 2011.
  APA
  Recker, J., Mylopoulos, J., & Sadeh, N. M. (2011). Evaluations of Process Modeling Grammars. Springer Berlin Heidelberg.
  Chicago
  Recker, Jan, John Mylopoulos, and Norman M Sadeh. Evaluations of Process Modeling Grammars. : Springer Berlin Heidelberg, 2011.