Cetron, M. J. (1969). Technological forecasting: A practical approach. New York: Technology Forecasting Institute.
Čikaški stil citiranjaCetron, Marvin J. Technological Forecasting: A Practical Approach. New York: Technology Forecasting Institute, 1969.
MLA način citiranjaCetron, Marvin J. Technological Forecasting: A Practical Approach. New York: Technology Forecasting Institute, 1969.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.