Ledgard, H. (1969). A formal system for defining the syntax and semantics of computer languages. Project MAC, Mass. Inst. of Technology.
Chicago-Zitierstil (17. Ausg.)Ledgard, Henry. A Formal System for Defining the Syntax and Semantics of Computer Languages. Cambridge, Mass: Project MAC, Mass. Inst. of Technology, 1969.
MLA-Zitierstil (9. Ausg.)Ledgard, Henry. A Formal System for Defining the Syntax and Semantics of Computer Languages. Project MAC, Mass. Inst. of Technology, 1969.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.