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

Eitemau Tebyg

• Research design : qualitative, quantitative, and mixed methods approaches /
  gan: Creswell, John W.
  Cyhoeddwyd: (2014)
• Research design : qualitative & quantitative approaches /
  gan: Creswell, John W.
  Cyhoeddwyd: (1994)
• Research design : qualitative, quantitative, and mixed methods approaches /
  gan: Creswell, John W.
  Cyhoeddwyd: (2009)
• Social research method : qualitative and quantitative approaches /
  gan: Bernard, H. Russell (Harvey Russell), 1940-
  Cyhoeddwyd: (2013)
• The Sage dictionary of social research methods /
  Cyhoeddwyd: (2006)