PDFArxivat 2013-11-09 a Wayback Machine. Jan I. Ohlson, Martin Irestedt, Jon Fjedså i Per G. P. Ericson. 2012. Nuclear DNA from a 180-year-old study skin reveals the phylogenetic position of the Kinglet Calyptura Calyptura cristata (Passeriformes: Tyrannides). IBIS. 154, 533–541
termcat.cat
«Caliptura». Cercaterm. TERMCAT, Centre de Terminologia. Rev. 15-1-2021 (català)
web.archive.org
PDFArxivat 2013-11-09 a Wayback Machine. Jan I. Ohlson, Martin Irestedt, Jon Fjedså i Per G. P. Ericson. 2012. Nuclear DNA from a 180-year-old study skin reveals the phylogenetic position of the Kinglet Calyptura Calyptura cristata (Passeriformes: Tyrannides). IBIS. 154, 533–541