Perkins, J. (2010). Python text processing with NLTK 2.0 cookbook: Over 80 practical recipes for using Python's NLTK suite of libraries to maximize your natural language processing capabilities. Packt Pub.
Chicago-Zitierstil (17. Ausg.)Perkins, Jacob. Python Text Processing with NLTK 2.0 Cookbook: Over 80 Practical Recipes for Using Python's NLTK Suite of Libraries to Maximize Your Natural Language Processing Capabilities. Birmingham, U.K: Packt Pub, 2010.
MLA-Zitierstil (9. Ausg.)Perkins, Jacob. Python Text Processing with NLTK 2.0 Cookbook: Over 80 Practical Recipes for Using Python's NLTK Suite of Libraries to Maximize Your Natural Language Processing Capabilities. Packt Pub, 2010.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.