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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Freeman, Howard E., Peter H. Rossi, و 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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)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.