12Gill, Frank B., Beth Slikas, and Frederick H. Sheldon (2005) Phylogeny of Titmice (Paridae): II. Species relationships based on sequences of the mitochondrial cytochrome-b gene, The Auk, vol. 122, no. 1
↑Gill, Frank, and Minturn Wright (2006) , Birds of the World: Recommended English Names
↑Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes (2003) , Checklist of Vertebrates of the United States, the U.S. Territories, and Canada
