TY  - BOOK
AU  - Cohen, Louis
AU  - Manion,Lawrence
AU  - Morrison,Keith
TI  - Research Methods in Education
SN  - 978-0415-58336-7
U1  - 370.78 
PY  - 2011///
CY  - London
PB  - Routledge
KW  - Reseach Methods
KW  - Education Research
ER  -