TY  - BOOK
AU  - Thomas,Gray
TI  - How to do your case study: A guide for students and researchers 
SN  - 978085025630 :
AV  - H62 .T46
PY  - 2011///
CY  - Los Angeles,Calif:London
PB  - Sage
N1  - Includes bibliographical references (P.219-224) and index
ER  -