Pelatuk raja: Perbedaan antara revisi

* '''Tanner''', James T. (1964): The Decline and Present Status of the Imperial Woodpecker of Mexico. ''[[Auk (jurnal)|Auk]]'' '''81'''(1): 74-81. [http://elibrary.unm.edu/sora/Auk/v081n01/p0074-p0081.pdf PDF fulltext]

 

*[http://www.birdlife.org/datazone/species/index.html?action=SpcHTMDetails.asp&sid=718&m=0 BirdLife Species Factsheet]

*[http://ip30.eti.uva.nl/naturalis/detail?lang=uk&id=55 3D view] of specimen RMNH 110.098, [[Naturalis]], Leiden - requires [[QuickTime]] browser plugin)