Yin, R. K. (2009). Case study research: Design and methods fourth edition. Sage.
Lua i Stíl Chicago (17ú heag.)Yin, Robert K. Case Study Research: Design and Methods Fourth Edition. Sage, 2009.
Lua MLA (8ú heag.)Yin, Robert K. Case Study Research: Design and Methods Fourth Edition. Sage, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.