Alcock, J. (2013) Animal behavior: an evolutionary approach. 10th ed. Sunderland, Mass: Sinauer Associates.
Begon, M. et al. (2006) Ecology: from individuals to ecosystems. 4th ed. Malden, Mass: Blackwell. Available at: https://ebookcentral.proquest.com/lib/uea/detail.action?docID=243556.
Dawkins, R. (2006) The selfish gene. 30th anniversary ed. Oxford: Oxford University Press. Available at: https://ebookcentral.proquest.com/lib/uea/detail.action?docID=422874.
Zimmer, C. (2014) The tangled bank: an introduction to evolution. Second edition. Greenwood Village, Colorado: Roberts and Company.
