Gerring, J. (2007). Case study research: Principles and practices. Cambridge University Press.
Chicago-viite (17. p.)Gerring, John. Case Study Research: Principles and Practices. Cambridge, New York: Cambridge University Press, 2007.
MLA-viite (9. p.)Gerring, John. Case Study Research: Principles and Practices. Cambridge University Press, 2007.
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