APA Citation

Bird, S., Klein, E., & Loper, E. (2009). Natural language processing with Python. Beijing ; Cambridge [Mass.]: O'Reilly.

Chicago Style Citation

Bird, Steven., Ewan Klein, and Edward Loper. Natural Language Processing With Python. Beijing ; Cambridge [Mass.]: O'Reilly, 2009.

MLA Citation

Bird, Steven., Ewan Klein, and Edward Loper. Natural Language Processing With Python. Beijing ; Cambridge [Mass.]: O'Reilly, 2009.

Warning: These citations may not always be 100% accurate.