TY  - BOOK
AU  - Litwin, Mark S.
TI  - How to measure in survey reliability and validity
T2  - (Survey kit; no. 7)
SN  - 0803973888
PY  - 1995///
CY  - Thousand Oaks
PB  - SAGE Publications
KW  - Health Surveys
KW  - Social Surveys
ER  -