Sirppikipuaja (Finnish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sirppikipuaja" in Finnish language version.

refsWebsite

Global rank Finnish rank

5,881^st place

32^nd place

88^th place

7^th place

6,917^th place

2,017^th place

google.fi

Steven L. Hilty, Bill Brown, William L. Brown: A Guide to the Birds of Colombia, s. 354. Princeton University Press, 1986. Kirja Googlen teoshaussa (viitattu 20.2.2009). (englanniksi)
Robert S. Ridgely, Guy Tudor, William L. Brown: The Birds of South America, s. 211. University of Texas Press, 1994. ISBN 978-0-292-77063-8. Kirja Googlen teoshaussa (viitattu 20.2.2009). (englanniksi)

BirdLife International: Campylorhamphus trochilirostris IUCN Red List of Threatened Species. Version 2013.2. 2012. International Union for Conservation of Nature, IUCN, Iucnredlist.org. Viitattu 30.12.2013. (englanniksi)