Of course, you should find all the primary sources on your persona that are available. The marginalists and Alfred Marshall make important contributions. All the classical economists, including Marx, grappled with this issue. Money is often tied to determination of the price level. A central focus is the evolution of the quantity theory of money.
Distribution can reflect several things.
Today we might focus on the size distribution of income as well as the functional distribution of income. Earlier in economic thought the emphasis was on the factor share distribution of income. Here the emphasis is on international, rather than internal or domestic trade. All characters from the mercantilists onward. Methodological debate - historicists versus the classicists leading to the methodological synthesis of the 20th Century.