APA (7th ed.) Citation

Allen, J. (1995). Natural language understanding (2nd ed.). Benjamin/Cummings Pub.

Chicago Style (17th ed.) Citation

Allen, James. Natural Language Understanding. 2nd ed. Redwood City, Calif: Benjamin/Cummings Pub, 1995.

MLA (9th ed.) Citation

Allen, James. Natural Language Understanding. 2nd ed. Benjamin/Cummings Pub, 1995.