TY  - BOOK
AU  - Langford,Joseph
AU  - McDonagh,Deana
TI  - Focus groups: supporting effective product development 
SN  - 0415262089
PY  - 2003///
CY  - London: 
PB  - Taylor & Francis
KW  - Focused group interviewing
KW  - Human engineering
KW  - Design
KW  - Human factors
N1  - Includes bibliographical references (p.483-517) and index
ER  -