APA (7 वां संस्करण) प्रशस्ति पत्र
Hirschheim, R., Heinzl, A., & Dibbern, J. (2009). Information Systems Outsourcing: Enduring Themes, Global Challenges, and Process Opportunities. Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-540-88851-2
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Hirschheim, Rudy, Armin Heinzl, और Jens Dibbern. Information Systems Outsourcing: Enduring Themes, Global Challenges, and Process Opportunities. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. https://doi.org/10.1007/978-3-540-88851-2.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Hirschheim, Rudy, et al. Information Systems Outsourcing: Enduring Themes, Global Challenges, and Process Opportunities. Springer Berlin Heidelberg, 2009. https://doi.org/10.1007/978-3-540-88851-2.
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