Creswell,, John W.
Research design : qualitative, quantitative and mixed methods approaches / John W. Creswell
Research design : qualitative, quantitative and mixed methods approaches / John W. Creswell
. - 3rd ed
. - Los Angeles : Sage, cop. 2009
. - XXIX, 260 p. 24 cm
978-1-4129-6557-6 Brochado
303