Case study research : design and methods.

MLA

Yin, Robert K. Case Study Research : Design and Methods. 4th ed. Los Angeles: SAGE, 2009.

APA

Yin, R. K. (2009). Case study research : design and methods. 4th ed. Los Angeles: SAGE.

Chicago

Yin, Robert K., Case Study Research: Design and Methods. 4th ed. Los Angeles: SAGE, 2009.