APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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