APA način citiranja (7. izdanje)

ebrary, Inc, & Opelt, A. (2013). Agile contracts: Creating and managing successful projects with Scrum. Wiley.

Čikaški stil citiranja (17. izdanje)

ebrary, Inc, i Andreas Opelt. Agile Contracts: Creating and Managing Successful Projects with Scrum. Hoboken, N.J.: Wiley, 2013.

MLA način citiranja (9. izdanje)

ebrary, Inc, i Andreas Opelt. Agile Contracts: Creating and Managing Successful Projects with Scrum. Wiley, 2013.