TY  - BOOK
AU  - Gravetter, Frederick J.
TI  - Understanding research methods for the behavioral sciences
SN  - 13: 978-981-4352-36-9
AV  - 150.72 G78u 
PY  - 2012///
CY  - Singapore
PB  - Cengage learning asia
N1  - Includes bibliographic references and index
ER  -