Applied research design : a practical guide/

Eitemau Tebyg

• Research Design
  gan: Creswelll W. John
  Cyhoeddwyd: (2009)
• Research Design
  gan: Creswell W. John
  Cyhoeddwyd: (2018)
• Research design : qualitative, quantitative, and mixed methods approaches /
  gan: Creswell, John W.
  Cyhoeddwyd: (2018)
• Research methods in urban and regional planning
  gan: Wang, Xinhao
  Cyhoeddwyd: (2007)
• Research design: quqlitative,quantitative and mixed methods approaches/
  gan: Creswell, John W.
  Cyhoeddwyd: (2009)