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- CRESWELL, John W. Research design : qualitative, quantitative, and mixed methods approaches. 3rd ed. Thousand Oaks : SAGE Publications, 2009. 260 s. ISBN 978-1-4129-6557-6. [Copy count : 1, currently available 0, at library only 1]
book
- CRESWELL, John W. Research design : qualitative, quantitative, and mixed methods approaches. 2nd ed. Thousand Oaks : SAGE Publications, 2003. xxvi, 246 s. ISBN 0-7619-2442-6. [Copy count : 4, currently available 2, at library only 2]
book