Ricardo, D., Sraffa, P., & Dobb, M. (1951). Works and correspondence of David Ricardo. At the University Press for the Royal Economic Society.

Ricardo, David, Piero Sraffa, and Maurice Dobb. Works and Correspondence of David Ricardo. Cambridge: At the University Press for the Royal Economic Society, 1951.

Ricardo, David, et al. Works and Correspondence of David Ricardo. At the University Press for the Royal Economic Society, 1951.