APA (7th ed.) Citation

(1986). Natural language processing: A knowledge-engineering approach / Richard E. Cullingford.

Chicago Style (17th ed.) Citation

Natural Language Processing: A Knowledge-engineering Approach / Richard E. Cullingford. 1986.

MLA (9th ed.) Citation

Natural Language Processing: A Knowledge-engineering Approach / Richard E. Cullingford. 1986.

Warning: These citations may not always be 100% accurate.