Handbook of data analysis

gan Bryman, Alan; Editor, Hardy, Melissa; Editor
Cyhoeddwyd 2009

Qualitative research.

gan Bryman,Alan(Editor) Burgess,Robert G.Editor)
Cyhoeddwyd 1999

The Sage encyclopedia of social science research methods

gan Bryman, Alan; Editor, Lewis-Beck, Michael S; Editor, Liao, Tim Futing; Editor
Cyhoeddwyd 2004