Παραπομπή σε μορφή APA (7η εκδ.)

Opelt, A. (2013). Agile contracts: Creating and managing successful projects with Scrum. Wiley. https://doi.org/10.1002/9781118640067

Παραπομπή σε μορφή Chicago (17η εκδ.)

Opelt, Andreas. Agile Contracts: Creating and Managing Successful Projects with Scrum. Hoboken, N.J.: Wiley, 2013. https://doi.org/10.1002/9781118640067.

Παραπομπή σε μορφή MLA (8th εκδ.)

Opelt, Andreas. Agile Contracts: Creating and Managing Successful Projects with Scrum. Wiley, 2013. https://doi.org/10.1002/9781118640067.