1. Allison, S.T. 2024. Unification principle of heroism. In Encyclopedia of heroism studies, ed. S.T. Allison, J.K. Beggan, and G.R. Goethals. New York: Springer.
2. Allison, S.T., and G.R. Goethals. 2020. The heroic leadership imperative: How leaders inspire and mobilize change. West Yorkshire: Emerald.
3. Allison, S.T., G.R. Goethals, A.R. Marrinan, O.M. Parker, S.P. Spyrou, and M. Stein. 2019. The metamorphosis of the hero: Principles, processes, and purpose. Frontiers in Psychology 10: 606.
4. Campbell, J. 1949. The hero with a thousand faces. New York: New World Library.
5. ———. 1988. The power of myth. New York: Anchor Books.