Dyfyniad APA

Yin, R. K. (2009). Case study research: Design and methods fourth edition. Sage.

Dyfyniad Arddull Chicago

Yin, Robert K. Case Study Research: Design and Methods Fourth Edition. Sage, 2009.

Dyfyniad MLA

Yin, Robert K. Case Study Research: Design and Methods Fourth Edition. Sage, 2009.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.