Polo, P., Fernandez, A., Muñoz-Reyes, J., Dufey, M., & Buunk, A. (1969). Intrasexual Competition and Height in Adolescents and Adults. Evolutionary Psychology : An International Journal of Evolutionary Approaches to Psychology and Behavior, 16(1), 1474704917749172. https://doi.org/10.1177/1474704917749172 (Original work published 1969)