Hamilton, M. J., Burger, O., DeLong, J. P., Walker, R. S., Moses, M. E., & Brown, J. H. (2009). Population stability, cooperation, and the invasibility of the human species. National Academy of Sciences.

Hamilton, Marcus J., Oskar Burger, John P. DeLong, Robert S. Walker, Melanie E. Moses, e James H. Brown. Population Stability, Cooperation, and the Invasibility of the Human Species. National Academy of Sciences, 2009.

Hamilton, Marcus J., et al. Population Stability, Cooperation, and the Invasibility of the Human Species. National Academy of Sciences, 2009.