APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Allen, James. Natural Language Understanding. Menlo Park, Calif. [u.a.]: Benjamin/Cummings, 1987.

MLA (9th ed.) Citation

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

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