Yin, R. K. (2014). Case study research: Design and methods. Sage.
Tohutoru Kātū Chicago (17th ed.)Yin, Robert K. Case Study Research: Design and Methods. los angeles: Sage, 2014.
Tohutoro MLA (9th ed.)Yin, Robert K. Case Study Research: Design and Methods. Sage, 2014.
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