TY  - BOOK
AU  - Singer, Judith D
AU  - Willett, John B
TI  - Applied longitudinal data analysis: modeling change and event occurrence
SN  - 9780195152968
U1  - 001.42 SIN 
PY  - 2003///
CY  - Oxford
PB  - Oxford University Press
KW  - Data Analysis
ER  -