APA (7th ed.) Citation

Beck, K., & Fowler, M. (2004). Planning extreme programming (2nd print.). Addison-Wesley.

Chicago Style (17th ed.) Citation

Beck, Kent, and Martin Fowler. Planning Extreme Programming. 2nd print. Boston [etc.]: Addison-Wesley, 2004.

MLA (9th ed.) Citation

Beck, Kent, and Martin Fowler. Planning Extreme Programming. 2nd print. Addison-Wesley, 2004.