Freeman, C. (1976). Progress and problems in social forecasting: Disciplinary contributions to an interdisciplinary task. Editors: C.Freeman, M.Jahoda and I.Miles. Social Science Research Council.
Cita Chicago (17th ed.)Freeman, Christopher. Progress and Problems in Social Forecasting: Disciplinary Contributions to an Interdisciplinary Task. Editors: C.Freeman, M.Jahoda and I.Miles. Lond.: Social Science Research Council, 1976.
Cita MLA (8th ed.)Freeman, Christopher. Progress and Problems in Social Forecasting: Disciplinary Contributions to an Interdisciplinary Task. Editors: C.Freeman, M.Jahoda and I.Miles. Social Science Research Council, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.