TY  - BOOK
AU  - Cohen,Louis
AU  - Manion,Lawrence
TI  - Research methods in education
SN  - 0415102359
U1  - 370.72 
PY  - 1994///
CY  - London : 
PB  - Routledge, 
KW  - Education
KW  - Research
KW  - Giáo dục
KW  - Nghiên cứu
ER  -