APA (7th ed.) Citation

Dunbar, R., Cornah, L., Daly, F., & Bowyer, K. (2002). Vigilance in human groups: A test of alternative hypotheses.

Chicago Style (17th ed.) Citation

Dunbar, R., L. Cornah, F. Daly, and K. Bowyer. Vigilance in Human Groups: A Test of Alternative Hypotheses. 2002.

MLA (9th ed.) Citation

Dunbar, R., et al. Vigilance in Human Groups: A Test of Alternative Hypotheses. 2002.