The image is from Wikipedia Commons
- B. A. Drummond, B. A. und A. L. Larned: Biological monitoring in the central Aleutian Islands, Alaska in 2007: summary appendices. U.S. Fish and Wildlife Service Report AMNWR 07/06. Homer, Alaska, 2007
- This page is based on the Wikipedia article 尤拉克島; it is used under the Creative Commons Attribution-ShareAlike 3.0 Unported License (CC-BY-SA). You may redistribute it, verbatim or modified, providing that you comply with the terms of the CC-BY-SA.