Jurafsky, D., & Martin, J. H. (2000). Speech and language processing: An introduction to natural language processing, computational linguistics, and speech recognition. Prentice Hall ; Pearson Education.

Jurafsky, Dan, and James H. Martin. Speech and Language Processing: An Introduction to Natural Language Processing, Computational Linguistics, and Speech Recognition. Upper Saddle River, N.J. : New Delhi: Prentice Hall ; Pearson Education, 2000.

Jurafsky, Dan, and James H. Martin. Speech and Language Processing: An Introduction to Natural Language Processing, Computational Linguistics, and Speech Recognition. Prentice Hall ; Pearson Education, 2000.