References
- Boertmann D. 1990. Phylogeny of the divers, family Gaviidae (Aves). Steenstrupia. 16:21–36.
- Cracraft J. 1982. Phylogenic relationships and monophyly of loons, grebes, and hesperornithiform birds, with comments on early history of birds. Syst Zool. 31:35–56.
- del Hoyo J, Collar NJ, Christie DA, Elliott A, Fishpool LDC. 2014. HBW and BirdLife international illustrated checklist of the birds of the world.. Barcelona, Spain/Cambridge, UK: BirdLife International.
- Saitou N, Nei M. 1987. The neighbor-joining method: a new method for reconstructing phylogenetic trees. Mol Biol Evol. 4:406–425.
- Watanabe M, Nikaido M, Tsuda TT, Kobayashi T, Mindell D, Cao Y, Okada N, Hasegawa M. 2006. New candidate species most closely related to penguins. Gene. 378:65–73.