I am interested in exploring the secondary literature on a specific dimension of the movement from classical to neoclassical economics. In particular, I am interested in a question related to the transition from a labor theory of value to a utility theory of value. It is sometimes said in the historical literature that when this transition took place, economics shifted from being based on the producer (the laborer) to the consumer. What are the best secondary sources on this shift in economic analysis and its implications for how economic activity is understood? Thanks, Brad Bateman