1. Malthus, T. (1798). An Essay on the Principle of Population as It Affects the Future Improvement of Society, J. Johnson in St Paul’s Church-Yard. [1st ed.].
2. Carson, R. (1962). Silent Spring, Houghton Mifflin Company.
3. Borgström, G. (1965). The Hungry Planet: The Modern World at the Edge of Famine, Macmillan.
4. Ehrlich, P., and Ehrlich, A. (1968). The Population Bomb, Ballentine Books.
5. Meadows, D.H., Meadows, D.L., Randers, J., and Behrens, W.W. (1972). The Limits to Growth: A Report for the Club of Rome’s Project on the Predicament of Mankind, Universe Books. Available online: https://archive.org/details/limitstogrowthr00mead.