Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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