Creative problem solving in the field reflections on a career od Whyte, William Foote 1914-2000

Methods toward a science of behavior and experience od Ray, William J. 1945-

Kasanayan sa komunikasyon II od Constantino, Pamela C.

Encyclopedia of language and education research methods in language and education

Exploring research od Salkind, Neil J.

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Research methods in psychology a handbook od Schweigert, Wendy A.

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Research methods od Nation, Jack R.

Context and method in qualitative research

Social research methods qualitative and quantitative approaches od Neuman, William Lawrence

Practical research planning and design od Leedy, Paul D.