Driving toward theory in program evaluation: More models to choose from
| Year of publication: |
1989
|
|---|---|
| Authors: | Lipsey, Mark W. ; Pollard, John A. |
| Published in: |
Evaluation and Program Planning. - Elsevier, ISSN 0149-7189. - Vol. 12.1989, 4, p. 317-328
|
| Publisher: |
Elsevier |