‘Verification’, Proceedings of the Aristotelian Society 39 (1938–9), 225–48

Repr. in

• G. H. R. Parkinson (ed.), The Theory of Meaning (London, 1968: Oxford University Press)
• Mark J. Smith (ed.), Philosophy and Methodology of the Social Sciences, vol. 1, Canons and Custodians: Scientific Enquiry in the 20th Century (London, 2005: Sage), 35–53
• Concepts and Categories

trans. Spanish