Research design : qualitative, quantitative, and mixed methods approaches /

Autor Creswell, John W., 1945-
Vydáno 2014

Introduction to social research : quantitative & qualitative approaches /

Autor Punch, Keith
Vydáno 2014

Educational research : planning, conducting, and evaluating quantitative and qualitative research /

Autor Creswell, John W., 1945-
Vydáno 2014