Freeman, H. E., Rossi, P. H., & Rosenbaum, S. (1980). Evaluating social projects in developing countries. Development Centre of the Organisation for Economic Co-operation and Development ; OECD Publications and Information Center, distributor.
Παραπομπή σε μορφή Chicago (17η εκδ.)Freeman, Howard E., Peter H. Rossi, και Sonia Rosenbaum. Evaluating Social Projects in Developing Countries. Paris : Washington, D.C.: Development Centre of the Organisation for Economic Co-operation and Development ; OECD Publications and Information Center, distributor, 1980.
Παραπομπή σε μορφή MLA (8th εκδ.)Freeman, Howard E., et al. Evaluating Social Projects in Developing Countries. Development Centre of the Organisation for Economic Co-operation and Development ; OECD Publications and Information Center, distributor, 1980.