แหล่งที่มา WikiPedia: ทะเลชุกชี http://ak.audubon.org/birds-science-education/arct... http://www.unep.org/dewa/giwa/areas/reports/r1a/as... //tools.wmflabs.org/geohack/geohack.php?pagename=%... https://commons.wikimedia.org/wiki/Category:Chukch...
