TY  - BOOK
AU  - Hammond Michael
AU  -  Wellington Jerry
TI  - Research methods :  The key concepts
SN  - 9780415599832 (pbk)
U1  - Sigma:f, Q3 
PY  - 2013///
CY  - London
PB  - Routledge UK       
KW  - SOCIAL SCIENCES
ER  -