"Lejewski C., Logic and Ontology, in: Modern Logic: A Survey, ed. E. Agazzi, Reidel, Dordrecht 1981, pp. 379–398.
Lejewski C., Logic, Ontology and Metaphysics, in: Philosophy in Britain Today, ed. S.G. Shanker, State University of New York Press, New York 1986, pp. 171–196.
Lejewski C., O dramatycznej fazie rozwojowej pansomatyzmu Kotarbińskiego, “Filozofia Nauki” 1994, Vol. 2, No. 1, pp. 23–36.
Lejewski C., On the Dramatic Stage in the Development of Kotarbiński’s Pansomatism, in: Ontologie und Logik / Ontology and Logic, eds. P. Weingartner, E. Morscher, Duncker & Humblot, Berlin 1979, pp. 197–214.
Lejewski C., Ontology and Logic, in: Philosophy of Logic, ed. S. Körner, Blackwell, Oxford 1976, pp. 1–28 [reply to comments, pp. 48–63].
Lejewski C., Ontology: What Next?, in: Sprache und Ontologie / Language and Ontology: Proceedings of the 6th International Wittgenstein Symposium, eds. W. Leinfellner et al., Hölder-Pichler-Tempsky, Vienna 1982, pp. 173–185.
Lejewski C., Outline of an Ontology, “Bulletin of the John Rylands University Library of Manchester” 1976, Vol. 59, pp. 127–147.
Lejewski C., Popper’s Theory of Formal or Deductive Inference, in: The Philosophy of Karl Popper, ed. P.A. Schilpp, Open Court, La Salle 1974, pp. 632–670.
Lejewski C., Studies in the Axiomatic Foundations of Boolean Algebra: Part 1, “Notre Dame Journal of Formal Logic” 1960, Vol. 1, pp. 23–47.
Lejewski C., Studies in the Axiomatic Foundations of Boolean Algebra: Part 2, “Notre Dame Journal of Formal Logic” 1960, Vol. 1, pp. 91–106.
Lejewski C., Studies in the Axiomatic Foundations of Boolean Algebra: Part 3, “Notre Dame Journal of Formal Logic” 1961, Vol. 2, pp. 79–93.
Lejewski C., A System of Logic for Bicategorial Ontology, “Journal of Philosophical Logic” 1974, Vol. 3, pp. 265–283.
Lejewski C., A System of Logic for Bicategorial Ontology, in: Problems in Logic and Ontology, eds. E. Morscher, J. Czermak, P. Weingartner, Akademische Druck- u. Verlagsanstalt, Graz 1977, pp. 99–117.
Łukasiewicz J., Pamiętnik, eds. J. Jadacki, P. Surma, Semper, Warszawa 2013."