TY  - BOOK
AU  - Gerring,John
TI  - Social science methodology: a unified framework 
T2  - Strategies for social inquiry
SN  - 9780521115049 (hbk.)
AV  - H 61 .G466 2012 
PY  - 2012///
CY  - Cambridge, New York
PB  - Cambridge University Press
KW  - Social sciences
KW  - Methodology
N1  - Previous ed.: 2001; Includes bibliographical references (p. 444-491) and index
ER  -