TY  - BOOK
AU  - Linfield J.K.
AU  - Posavac E.J.
TI  - Program evaluation: methods and case studies
SN  - 9781138103962
AV  - DUCE H62.5.U5 
PY  - 2018///
CY  - London.
PB  - Rourlege.
N1  - Includes references ,subject author and subject index
ER  -