Program evaluation : methods and case studies /
Emil J. Posavac, Raymond G. Carey.
- 7th ed.
- Upper Saddle River, N.J. : R. G. Carey and Associates, c2007.
- xvi, 336 p. : ill. ; 24 cm.
9780132275606 (hardcover) 0132275600 (hardcover)
2006012136
Evaluation research (Social action programs)--United States.