APA-viite (7. p.)

Kenny, E., Birkhead, T., & Green, J. (2017). Allopreening in birds is associated with parental cooperation over offspring care and stable pair bonds across years. Oxford University Press.

Chicago-viite (17. p.)

Kenny, E., T. Birkhead, ja J. Green. Allopreening in Birds Is Associated with Parental Cooperation over Offspring Care and Stable Pair Bonds Across Years. Oxford University Press, 2017.

MLA-viite (9. p.)

Kenny, E., et al. Allopreening in Birds Is Associated with Parental Cooperation over Offspring Care and Stable Pair Bonds Across Years. Oxford University Press, 2017.