APA-viite (7. p.)

Bouwhuis, S., Sheldon, B., Verhulst, S., & Charmantier, A. (2009). Great tits growing old: Selective disappearance and the partitioning of senescence to stages within the breeding cycle.

Chicago-viite (17. p.)

Bouwhuis, S., B. Sheldon, S. Verhulst, ja A. Charmantier. Great Tits Growing Old: Selective Disappearance and the Partitioning of Senescence to Stages Within the Breeding Cycle. 2009.

MLA-viite (9. p.)

Bouwhuis, S., et al. Great Tits Growing Old: Selective Disappearance and the Partitioning of Senescence to Stages Within the Breeding Cycle. 2009.