* Rybczynski, N. (2000), Cranial anatomy and phylogenetic position of "Suminia getmanovi", a basal anomodont (Amniota: Therapsida) from the Late Permian of Eastern Europe", "Zoological Journal of the Linnean Society" 130:329-373* Jörg Fröbisch and Robert R. Reisz (2009).
* Rybczynski, N. (2000), Cranial anatomy and phylogenetic position of "Suminia getmanovi", a basal anomodont (Amniota: Therapsida) from the Late Permian of Eastern Europe", "Zoological Journal of the Linnean Society" 130:329-373* Jörg Fröbisch and Robert R. Reisz (2009).