Opelt, A. (2013). Agile contracts: Creating and managing successful projects with Scrum. Wiley.
Chicago-Zitierstil (17. Ausg.)Opelt, Andreas. Agile Contracts: Creating and Managing Successful Projects with Scrum. Hoboken, New Jersey: Wiley, 2013.
MLA-Zitierstil (9. Ausg.)Opelt, Andreas. Agile Contracts: Creating and Managing Successful Projects with Scrum. Wiley, 2013.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.