Cita APA (7a ed.)

Cullingford, R. E. (1986). Natural language processing: A knowledge-engineering approach. Rowman & Littlefield.

Cita Chicago Style (17a ed.)

Cullingford, Richard E. Natural Language Processing: A Knowledge-engineering Approach. Totowa: Rowman & Littlefield, 1986.

Cita MLA (9a ed.)

Cullingford, Richard E. Natural Language Processing: A Knowledge-engineering Approach. Rowman & Littlefield, 1986.