1989. DRETSKE, F. Knowlegde and the flow of information. Cambridge, Mass., V.S.A ., The MIT Press, 1981. 273 p. TRANS/FORM/AÇÃO: Revista de Filosofia. 12, (Jan. 1989), 133–140. DOI:https://doi.org/10.1590/S0101-31731989000100009.