TY  - BOOK
AU  - Cohen,Louis
AU  - Manion,Lawrence
AU  - Morrison,Keith
TI  - Research methods in education
SN  - 9780415583367 :
PY  - 2011///
CY  - London
PB  - RoutledgeFalmer
KW  - Education
N1  - Includes bibliographical references (p. 407-437) and index
ER  -