APA-viite (7. p.)

Powell, J., Lewis, P., Roberts, N., García-Fiñana, M., & Dunbar, R. (2012). Orbital prefrontal cortex volume predicts social network size: An imaging study of individual differences in humans.

Chicago-viite (17. p.)

Powell, J., P. Lewis, N. Roberts, M. García-Fiñana, ja R. Dunbar. Orbital Prefrontal Cortex Volume Predicts Social Network Size: An Imaging Study of Individual Differences in Humans. 2012.

MLA-viite (9. p.)

Powell, J., et al. Orbital Prefrontal Cortex Volume Predicts Social Network Size: An Imaging Study of Individual Differences in Humans. 2012.