APA (7th ed.) Citation

Wall, J. A. (1993). Multilevel abstraction of discrete models in an interactive object-oriented simulation environment. [publisher not identified].

Chicago Style (17th ed.) Citation

Wall, James A. Multilevel Abstraction of Discrete Models in an Interactive Object-oriented Simulation Environment. [Place of publication not identified]: [publisher not identified], 1993.

MLA (9th ed.) Citation

Wall, James A. Multilevel Abstraction of Discrete Models in an Interactive Object-oriented Simulation Environment. [publisher not identified], 1993.