Dunbar, R., Cornah, L., Daly, F., & Bowyer, K. (2002). Vigilance in human groups: A test of alternative hypotheses.
Chicago-čujuhus (17. p.)Dunbar, R., L. Cornah, F. Daly, juo K. Bowyer. Vigilance in Human Groups: A Test of Alternative Hypotheses. 2002.
MLA-čujuhus (9. p.)Dunbar, R., et al. Vigilance in Human Groups: A Test of Alternative Hypotheses. 2002.
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