Case Study Research : Design And Methods -

Researchers are encouraged to use triangulation by drawing from six sources of evidence: documentation, archival records, interviews, direct observations, participant-observation, and physical artifacts.

Yin distinguishes between single-case designs (used for unique or extreme cases) and multiple-case designs , which follow a "replication logic" to strengthen generalizability. Case study research : design and methods

Establishing the standards for evaluating the results, such as identifying patterns or commonalities. Methodological Framework Researchers are encouraged to use triangulation by drawing

Defining what the "case" is (e.g., an individual, program, or organization) and establishing its boundaries. or organization) and establishing its boundaries.