APA-ийн эшлэл(7 дахь хэвлэлт)

Balka, K. (2011). Open Source Product Development: The Meaning and Relevance of Openness. Gabler. https://doi.org/10.1007/978-3-8349-6949-1

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Balka, Kerstin. Open Source Product Development: The Meaning and Relevance of Openness. Wiesbaden: Gabler, 2011. https://doi.org/10.1007/978-3-8349-6949-1.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Balka, Kerstin. Open Source Product Development: The Meaning and Relevance of Openness. Gabler, 2011. https://doi.org/10.1007/978-3-8349-6949-1.