APA (7th ed.) Citation

Harrison, F., Sciberras, J., & James, R. (2011). Strength of social tie predicts cooperative investment in a human social network. Public Library of Science.

Chicago Style (17th ed.) Citation

Harrison, F., J. Sciberras, and R. James. Strength of Social Tie Predicts Cooperative Investment in a Human Social Network. Public Library of Science, 2011.

MLA (9th ed.) Citation

Harrison, F., et al. Strength of Social Tie Predicts Cooperative Investment in a Human Social Network. Public Library of Science, 2011.