International Congress of Logic, Methodology and Philosophy of Science London, Ontario, & Butts, R. E. (1977). Proceedings of the Fifth International Congress of Logic, Methodology and Philosophy of Science: London, Ontario, Canada-1975 [27 August to 2 September 1975]. Reidel.
Chicago-Zitierstil (17. Ausg.)International Congress of Logic, Methodology and Philosophy of Science London, Ontario, und Robert E. Butts. Proceedings of the Fifth International Congress of Logic, Methodology and Philosophy of Science: London, Ontario, Canada-1975 [27 August to 2 September 1975]. Dordrecht <<[u.a.]>>: Reidel, 1977.
MLA-Zitierstil (9. Ausg.)International Congress of Logic, Methodology and Philosophy of Science London, Ontario, und Robert E. Butts. Proceedings of the Fifth International Congress of Logic, Methodology and Philosophy of Science: London, Ontario, Canada-1975 [27 August to 2 September 1975]. Reidel, 1977.