TY  - BOOK
AU  - Singer,Judith D.
AU  - Willett,John B.
TI  - Applied longitudinal data analysis: modeling change and event occurrence 
SN  - 9780195152968 (hbk.)
U1  - 300.72 
PY  - 2003///
CY  - Oxford
PB  - Oxford University Press
KW  - Social sciences
KW  - Longitudinal studies
N1  - Includes bibliographical references ( p. 613-626) and index
ER  -