Fleeming Jenkin (1870), "The Graphical Representation of the Laws of Supply and Demand, and their Application to Labour", in Alexander Grant, Recess Studies e (1872), "On the principles which regulate the incidence of taxes", Proceedings of Royal Society of Edinburgh 1871-2, pp. 618-30., anche in Papers, Literary, Scientific, &c, v. 2 {1887), a cura di S.C. Colvin e J.A. Ewing scorrendo fino al capitolo links.
