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 Publishing.
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: PACKT Publishing, 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 Publishing, 2010.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.