TY  - BOOK
AU  - Nering, Michael L
AU  - Ostini, Remo
TI  - Handbook of polytomous item response theory models
SN  - 9780805859928
SN  - 200904638
U1  - 150.287 NER 
PY  - 2010///
CY  - New York ; London
PB  - Routledge
KW  - Item response theory
KW  - Psychometrics
KW  - Social sciences - Mathematical models
KW  - Social sciences - Statistical methods
N1  - Includes bibliographical references and index
ER  -