APA (7th ed.) Citation

Allen, J. (1987). Natural language understanding. Benjamin-Cummings.

Chicago Style (17th ed.) Citation

Allen, James. Natural Language Understanding. Menlo Park, California [etc.]: Benjamin-Cummings, 1987.

MLA (9th ed.) Citation

Allen, James. Natural Language Understanding. Benjamin-Cummings, 1987.

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