APA (7th ed.) Citation

Beck Kent, Fowler Martin, & Kohnke Jennifer. (2001). Planning eXtreme programming. Addison-Wesley.

Chicago Style (17th ed.) Citation

Beck Kent, Fowler Martin, and Kohnke Jennifer. Planning EXtreme Programming. Addison-Wesley, 2001.

MLA (8th ed.) Citation

Beck Kent, et al. Planning EXtreme Programming. Addison-Wesley, 2001.