Methods in behavioral research por Cozby, Paul C.

Case study research design and methods por Yin, Robert K.

Case study research design and methods por Yin, Robert K.

Participant observation a methodology for human studies por Jorgensen, Danny L.

Participant observation a methodology for human studies por Jorgensen, Danny L.

Multimethod research a synthesis of styles por Brewer, John 1936-

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Methods in behavioral research por Cozby, Paul C.

Case study research design and methods por Yin, Robert K.

Case study research design and methods por Yin, Robert K.

Research methods in human development por Cozby, Paul C.