Yin, R. K. The case study method as a tool for doing evaluation.
Lua i Stíl Chicago (17ú heag.)Yin, Robert K. The Case Study Method as a Tool for Doing Evaluation.
Lua MLA (9ú heag.)Yin, Robert K. The Case Study Method as a Tool for Doing Evaluation.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.