Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood (2016) The eBird/Clements checklist of birds of the world: Version 2016 http://www.birds.cornell.edu/clementschecklist/download, läst 2016-08-11
doi.org
dx.doi.org
Per Alström, et al. (2018). ”Complete species-level phylogeny of the leaf warbler (Aves: Phylloscopidae) radiation”. Molecular Phylogenetics and Evolution 126: sid. 141–152. doi:10.1016/j.ympev.2018.03.031.