Research methods in education and psychology : integrating diversity with quantitative & qualitative approaches /

по Mertens, Donna M.
Опубликовано 1998

Research and evaluation in education and psychology : integrating diversity with quantitative, qualitative, and mixed methods /

по Mertens, Donna M.
Опубликовано 2005

Research and evaluation in education and psychology : integrating diversity with quantitative, qualitative, and mixed methods /

по Mertens, Donna M.
Опубликовано 2010

Research and evaluation in education and psychology : integrating diversity with quantitative, qualitative, and mixed methods /

по Mertens, Donna M.
Опубликовано 2015