Redhead, D., Cheng, J., & O'Gorman, R. (2018). Individuals that impose costs. In
T. K. Shackelford, & V. A. Weekes-Shakelford (Eds.), Encyclopedia
of Evolutionary Psychological Science (Living Edition). Cham: Springer. doi:10.1007/978-3-319-16999-6_3572-1.