APA (7th ed.) Citation

Leeuwen, J. V. (1980). Rule-labeled programs: A study of a generalization of con ext-free grammars and some classes of formal languages. John Wiley and Sons.

Chicago Style (17th ed.) Citation

Leeuwen, Jan Van. Rule-labeled Programs: A Study of a Generalization of Con Ext-free Grammars and Some Classes of Formal Languages. Chichester: John Wiley and Sons, 1980.

MLA (9th ed.) Citation

Leeuwen, Jan Van. Rule-labeled Programs: A Study of a Generalization of Con Ext-free Grammars and Some Classes of Formal Languages. John Wiley and Sons, 1980.