Johansson, Ulf S; Ekman, Jan; Bowie, Rauri C.K; Halvarsson, Peter; Ohlson, Jan I; Price, Trevor D; Ericson, Per G.P (2013). "A complete multilocus species phylogeny of the tits and chickadees (Aves: Paridae)". Molecular Phylogenetics and Evolution. 69 (3): 852-860. doi:10.1016/j.ympev.2013.06.019. PMID23831453.
nih.gov
ncbi.nlm.nih.gov
Johansson, Ulf S; Ekman, Jan; Bowie, Rauri C.K; Halvarsson, Peter; Ohlson, Jan I; Price, Trevor D; Ericson, Per G.P (2013). "A complete multilocus species phylogeny of the tits and chickadees (Aves: Paridae)". Molecular Phylogenetics and Evolution. 69 (3): 852-860. doi:10.1016/j.ympev.2013.06.019. PMID23831453.
si.edu
nmnh.si.edu
James, H. F. et al. (2003). Pseudopodoces humilis, a misclassified terrestrial tit (Paridae) of the Tibetan Plateau: evolutionary consequences of shifting adaptive zones. Ibis 145: 185–202.pdf file 21 Eylül 2006 tarihinde Wayback Machine sitesinde arşivlendi.
James, H. F. et al. (2003). Pseudopodoces humilis, a misclassified terrestrial tit (Paridae) of the Tibetan Plateau: evolutionary consequences of shifting adaptive zones. Ibis 145: 185–202.pdf file 21 Eylül 2006 tarihinde Wayback Machine sitesinde arşivlendi.