Bird, S., Klein, E., & Loper, E. (2009). Natural language processing with Python. Beijing ; Cambridge [Mass.]: O'Reilly.
Chicago Style CitationBird, Steven., Ewan Klein, and Edward Loper. Natural Language Processing With Python. Beijing ; Cambridge [Mass.]: O'Reilly, 2009.
MLA CitationBird, 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.