TY  - BOOK
AU  - Persson, Ulf.
TI  - Psychology Research Units : : for use with the IB Diploma Programme / 
SN  - 9781876659752
AV  - BF 121 .P467 2008
U1  - IB 530  
PY  - 2008///.
CY  - Victoria : 
PB  - IBID Press, 
ER  -