Odkazy a literatúra:

1. Khoury, P. S.,  Kostiner, J. (1990). Tribes and state formation in the Middle East (p. 320). Univ of California Press.
2. Dawson, C. (1994). Zrození Evropy (p. 245). Vyšehrad.
3. Wilson, P. J. (1988). The Domestication of the Human Species. Anthropologica (Vol. 32, p. 201).
4. Waal, F. de. (2006). Dobráci od přírody. ACADEMIA, Praha
5. Hodgson, G., & Knudsen, T. (2013). Darwin’s Conjecture: The Search for General Principles of Social and Economic Evolution. University Of Chicago Press.
6. Johnson, A. W. (2000). The evolution of human societies: from foraging group to agrarian state. Stanford University Press.