1. Alker, H. (1984). Rediscoveries and reformulations: Humanistic methodologies for international studies. Cambridge University Press.
2. Amin, S. (1989). Eurocentrism. Monthly Review Press.
3. Aristotle. (1961). Poetics. Introduction by Francis Fergusson. Hill & Wang.
4. Asimov, I. (1981). A choice of catastrophes: The disasters that threaten our world. Arrow Books.
5. Barbour, J., Koslowski, T., & Mercati, F. (2014). Identification of a gravitational arrow of time. Physical Review Letters, 113(18), 181101.