TY  - BOOK
AU  - Hambleton,Ronald K.
AU  - Swaminathan,H
AU  - Rogers,H.Jane
TI  - Fundamentals of item response theory
U1  - 150.287 
PY  - 1991///
CY  - Newbury Park
PB  - SAGE
KW  - Item response theory
N1  - Includes index
ER  -