Chen, Huey-tsyh. Practical program evaluation : Assessing and improving planning, implementation, and effectiveness / Huey-tsyh Chen. - Thousand Oaks, Calif. : Sage, c2005. - xii, 292 p. : ill. ; 24 cm. Includes bibliographical references (p. 273-279) and index. ISBN: 9780761902324 LCCN: 2004011272 Subjects--Topical Terms: Evaluation research (Social action programs) Dewey Class. No.: 300.72 / CHE