J. J. Katz, La Realidad Subyacente del Lenguaje y su Valor Filosófico [The Underlying Reality of Language and Its Philosophical Import, Harper & Row Inc., New York 1971], Madrid (Alianza Editorial), 1975, 173 pp. LEXIS 1977, 1 (1), 107-116. https://doi.org/10.18800/lexis.197701.006.