1. Strengthening community-based project evaluations and deriving cross-project findings;Barley,1991
2. Multimethod research: A synthesis of styles;Brewer,1989
3. Toward a conceptual framework for mixed-method evaluation designs;Greene;Educational Evaluation and Policy Analysis,1989
4. Naturalistic inquiry;Lincoln,1985
5. Multiple sites in evaluation research: A survey of organizational and methodological issues;Sinacore,1991