Chen, Huey-tsyh. Practical program evaluation : theory-driven evaluation and the integrated evaluation perspective / Huey T. Chen - 2nd ed. - Los Angeles : SAGE, 2015. - xix, 443 p. ; 24 cm Includes index. Includes bibliographical references. ISBN: 9781412992305 (pbk.) Subjects--Topical Terms: Evaluation research (Social action programs)