Wills, G. (1972). Technological Forecasting: The Art and Its Managerial Implications. Penguin: Pelican Library of buiness and management.
Čikaški stil citiranjaWills, Gordon. Technological Forecasting: The Art and Its Managerial Implications. Penguin: Pelican Library of buiness and management, 1972.
MLA način citiranjaWills, Gordon. Technological Forecasting: The Art and Its Managerial Implications. Penguin: Pelican Library of buiness and management, 1972.
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