I.V. Bestuzhev-Lada Social Forecasting Philosophy Publishing House, Moscow (1969)

S. Enzer Delphi and Cross-Impact Techniques Institute for the Future, Middletown, Conn (1970)

E. Jantsch Technological Forecasting in Perspective OECD, Paris (1967)

H. Kahn On Studying the Future Hudson Institute, New York (1975)

J.P. Martino Technological Forecasting for Decision-Making Elsevier, New York (1972)

J. Mau, W. Bell The Sociology of the Future Russell Sage, New York (1971)

P. Meadows The Many Faces of Change Scheukman, Cambridge (1971)

W. Phillips, S. Thorson The Behavioural Sciences in the Long-Range Planning and Policy Forecasting U.S. Government Report, Washington, D.C (1976)

J. Platt Perception and Change University of Michigan Press, Ann Arbor (1970)

F.L. Polak Prognostics Elsevier, Amsterdam (1971)

A. Somit Political Science and the Study of the Future Dryden, Hinsdale (1974)

J. Tait Ways of Thinking about the Future Canadian Government, Ottawa (1975)

R. Theobald Futures Conditional Bobbs-Merrill, New York (1972)

M. Young Forecasting and the Social Sciences Heinemann, London (1968)