TY  - BOOK
AU  - Rossi,Peter H.
AU  - Lipsey,Mark W.
AU  - Henry,Gary T.
TI  - Evaluation: a systematic approach 
SN  - 9781506386607
AV  - H62.R6 2019 
PY  - 2019///
CY  - London
PB  - Sage
KW  - Evaluation research (Social action programs)
N1  - Includes bibliographical references (pages 323-330) and index
ER  -