Cita APA (7th ed.)

Gazdar, G., & Mellish, C. (1989). Natural language processing in Prolog: An introduction to computational linguistics. Addison-Wesley.

Cita Chicago (17th ed.)

Gazdar, Gerald, i Chris Mellish. Natural Language Processing in Prolog: An Introduction to Computational Linguistics. Wokingham, Eng: Addison-Wesley, 1989.

Cita MLA (9th ed.)

Gazdar, Gerald, i Chris Mellish. Natural Language Processing in Prolog: An Introduction to Computational Linguistics. Addison-Wesley, 1989.