APA (7th ed.) Citation

Ritchie, G. D. (1980). Computational grammar: An artificial intelligence approach to linguistic description. Harvester [etc.].

Chicago Style (17th ed.) Citation

Ritchie, Graeme D. Computational Grammar: An Artificial Intelligence Approach to Linguistic Description. Brighton [etc.]: Harvester [etc.], 1980.

MLA (9th ed.) Citation

Ritchie, Graeme D. Computational Grammar: An Artificial Intelligence Approach to Linguistic Description. Harvester [etc.], 1980.