TY  - BOOK
AU  - Collier David
AU  -  Gerring John
TI  - Concepts and method in Social Science : The tradition of Giovanni Sartori
SN  - 0415775786
U1  - "Yb4, P9" 
PY  - 2009///
CY  - New
PB  - York Routledge      
KW  - Sociology
N1  - Bibliography: P 347-359
ER  -