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.
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.