APA
                    Michael Butler M. G. H. M. M. L., . (2007). Formal Methods and Software Engineering. Germany: Springer.
                
                    Chicago
                    Michael Butler Michael G Hinchey María M Larrondo-Petrie, . 2007. Formal Methods and Software Engineering. Germany: Springer.
                
                    Harvard
                    Michael Butler M. G. H. M. M. L., . (2007). Formal Methods and Software Engineering. Germany: Springer.
                
                    MLA
                    Michael Butler Michael G Hinchey María M Larrondo-Petrie, . Formal Methods and Software Engineering. Germany: Springer. 2007.