Paynter, Raymond A. Jnr., ed. (1968). Check-list of Birds of the World, Volume 14. Vol. 14. Cambridge, Massachusetts: Museum of Comparative Zoology. pp. 247–250. Accessed 29 December 2017
Paynter, Raymond A. Jnr., ed. (1968). Check-list of Birds of the World, Volume 14. Vol. 14. Cambridge, Massachusetts: Museum of Comparative Zoology. p. 234. Accessed 29 December 2017
Nguembock, B.; Fjeldså, J.; Couloux, A.; Pasquet, E. (2009). "Molecular phylogeny of Carduelinae (Aves, Passeriformes, Fringillidae) proves polyphyletic origin of the genera Serinus and Carduelis and suggests redefined generic limits". Molecular Phylogenetics and Evolution. 51 (2): 169–181. doi:10.1016/j.ympev.2008.10.022. PMID19027082.
Nguembock, B.; Fjeldså, J.; Couloux, A.; Pasquet, E. (2009). "Molecular phylogeny of Carduelinae (Aves, Passeriformes, Fringillidae) proves polyphyletic origin of the genera Serinus and Carduelis and suggests redefined generic limits". Molecular Phylogenetics and Evolution. 51 (2): 169–181. doi:10.1016/j.ympev.2008.10.022. PMID19027082.