1. Cozzi, T. and Marchionatti, R. (eds) (2001) Piero Sraffa’s Political Economy — A Centenary Estimate (London: Routledge).
2. de Vivo, G. (2004) ‘Da Ricardo e Marx a Produzione di Merci a mezzo di Merci’, in the Conference Proceedings of the Lincei Academy, ‘International Conference on Piero Sraffa’, Rome, 11–12 February 2003, pp. 215–234.
3. Keynes, J. M. (1930) A Treatise on Money, 2 vols (London: Macmillan); Italian trans., Milano: Treves 1932 (1st vol.) and 1934 (2nd vol.).
4. Keynes, J. M. (1936) The General Theory of Employment. Interest and Money (London: Macmillan).
5. Manara, C. F. (1968) ‘Il modello di Sraffa per la produzione congiunta di merci a mezzo di merci’, in L’Industria, 1: 3–18. Eng. trans.: ‘Sraffa’s Model for the Joint Production of Commodities by Means of Commodities’, in Luigi L. Pasinetti (ed.) (1980), Essays on the Theory of Joint Production (London: Macmillan): pp. 1–15.