Boessenkool, Sanne (2008). „Relict or colonizer? Extinction and range expansion of penguins in southern New Zealand”. Proc. R. Soc. B.276 (1658), 815–821. o. DOI:10.1098/rspb.2008.1246. PMID 19019791.
Baker AJ, Pereira SL, Haddrath OP, Edge KA (2006). „Multiple gene evidence for expansion of extant penguins out of Antarctica due to global cooling”. Proc Biol Sci.273 (1582), 11–17. o. DOI:10.1098/rspb.2005.3260. PMID 16519228. (Hozzáférés: 2008. március 21.)
Boessenkool, Sanne (2008). „Relict or colonizer? Extinction and range expansion of penguins in southern New Zealand”. Proc. R. Soc. B.276 (1658), 815–821. o. DOI:10.1098/rspb.2008.1246. PMID 19019791.
Baker AJ, Pereira SL, Haddrath OP, Edge KA (2006). „Multiple gene evidence for expansion of extant penguins out of Antarctica due to global cooling”. Proc Biol Sci.273 (1582), 11–17. o. DOI:10.1098/rspb.2005.3260. PMID 16519228. (Hozzáférés: 2008. március 21.)