1. Abrams, N. E., & Primack, J. R. (2011). The new universe and the human future: How a shared cosmology could transform the world. New Haven: Yale University Press.
2. Ahmed, N. M. (2010). A user’s guide to the crisis of civilisation: And how to save it. London: Pluto Press.
3. Alvarez, W. (1997). T. rex and the crater of doom. Princeton: Princeton University Press.
4. Amara, R. (1974). The futures field: Functions, forms, and critical issues. Futures, 6(4), 289–301. doi: 10.1016/0016-3287(74)90072-X .
5. Amara, R. (1981). The futures field: Searching for definitions and boundaries. The Futurist, 15(1), 25–29.