APA (7th ed.) Citation

Barry, P. (2011). Paul's Python pearls. O'Reilly Media.

Chicago Style (17th ed.) Citation

Barry, Paul. Paul's Python Pearls. [United States?]: O'Reilly Media, 2011.

MLA (9th ed.) Citation

Barry, Paul. Paul's Python Pearls. O'Reilly Media, 2011.

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