TY  - BOOK
AU  - Gerring,John
TI  - Case study research: Principles and practices
SN  - 9781316632505
U1  - 001.4 
PY  - 2017///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Research
KW  - Research methods
N1  - Includes bibliographical references and index
ER  -