Leffingwell, D. (2011). Agile software requirements: Lean requirements practices for teams, programs, and the enterprise. Addison-Wesley.
Chicago-Zitierstil (17. Ausg.)Leffingwell, Dean. Agile Software Requirements: Lean Requirements Practices for Teams, Programs, and the Enterprise. Upper Saddle River, NJ ; Munich [u.a.]: Addison-Wesley, 2011.
MLA-Zitierstil (9. Ausg.)Leffingwell, Dean. Agile Software Requirements: Lean Requirements Practices for Teams, Programs, and the Enterprise. Addison-Wesley, 2011.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.