TY  - BOOK
AU  - Mangal,S.K.; Mangal,Shubhra
AU  - Mangal,Shubhara
TI  - Research methodology in behavioural sciences 
SN  - 8120348087 (paperback)
PY  - 2013///
CY  - New Delhi
PB  - Prentice-Hall 
UR  - http://www.amazon.com/exec/obidos/ASIN/8120348087/chopaconline-20
ER  -