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.