Παραπομπή σε μορφή APA (7η εκδ.)

Balka, K. (2011). Open Source Product Development: The Meaning and Relevance of Openness. Gabler.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Balka, Kerstin. Open Source Product Development: The Meaning and Relevance of Openness. Wiesbaden: Gabler, 2011.

Παραπομπή σε μορφή MLA (8th εκδ.)

Balka, Kerstin. Open Source Product Development: The Meaning and Relevance of Openness. Gabler, 2011.