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-referens (17:e uppl.)Bouwhuis, S., B. Sheldon, S. Verhulst, och A. Charmantier. Great Tits Growing Old: Selective Disappearance and the Partitioning of Senescence to Stages Within the Breeding Cycle. 2009.
MLA-referens (9:e uppl.)Bouwhuis, S., et al. Great Tits Growing Old: Selective Disappearance and the Partitioning of Senescence to Stages Within the Breeding Cycle. 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.