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
. - 4th ed
. - Thousand Oaks : Sage, cop. 2014
. - XXIX, 273 p. : il. 26 cm
978-1-4522-7461-4 Brochado
303