References
mankiw2021
Mankiw, N. Gregory. (2021). Principles of Economics. Cengage Learning.
marshall1890
Marshall, Alfred. (1890). Principles of Economics. Macmillan.
pigou1920
Pigou, Arthur C.. (1920). The Economics of Welfare. Macmillan.
samuelson1954
Samuelson, Paul A.. (1954). The Pure Theory of Public Expenditure. The Review of Economics and Statistics.
hardin1968
Hardin, Garrett. (1968). The Tragedy of the Commons. Science.