Thiên nga kèn (Vietnamese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Thiên nga kèn" in Vietnamese language version.

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about.com

littlerock.about.com

academia.edu

allaboutbirds.org

archive.org

arkive.org

biodiversitylibrary.org

books.google.com

  • Grinnell, Joseph; Bryant, Harold Child; Storer, Tracy Irwin (1918). The Game Birds of California. University of California Press. tr. 254. Truy cập ngày 18 tháng 8 năm 2010.

calacademy.org

researcharchive.calacademy.org

citizen-times.com

cornell.edu

birds.cornell.edu

  • “Mute Swan”. Cornell Lab of Ornithology. Truy cập ngày 18 tháng 12 năm 2011.

doi.org

fs.fed.us

fws.gov

library.fws.gov

handle.net

hdl.handle.net

  • Morony, John J.; Bock, Walter Joseph; Farrand, John (1975). Reference list of the birds of the world. New York: American Museum of Natural History. hdl:2246/6700. OCLC 483451163.

howardmeyerson.com

hww.ca

iucnredlist.org

jstor.org

lpzoo.org

nytimes.com

sibleyguides.com

state.mn.us

files.dnr.state.mn.us

torontozoo.com

trumpeterswansociety.org

  • Groves, Deborah J. (tháng 3 năm 2017). Continent-wide Conservation (PDF) (Bản báo cáo). USFWS. Bản gốc (PDF) lưu trữ ngày 5 tháng 9 năm 2017. Truy cập ngày 30 tháng 5 năm 2017.

utahbirds.org

web.archive.org

worldcat.org

  • Morony, John J.; Bock, Walter Joseph; Farrand, John (1975). Reference list of the birds of the world. New York: American Museum of Natural History. hdl:2246/6700. OCLC 483451163.

wsu.edu

beachwatchers.wsu.edu