^行政面積. 金門縣政府民政處 Civil Affairs Department, Kinmen County Government (in Chinese (Taiwan)). 29 January 2019. Retrieved 9 August 2019. 外圍 島嶼 面積單位: (平方公里){...} 二膽 0.2800
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^Wendell Minnick (19 March 2019). "How to Save Taiwan from Itself". The National Interest. Retrieved 26 August 2019. Not to crow, but I have been on Dongyin, Erhtan and Tatan islands; the U.S. signal intelligence antenna farm at Pingtun Li; and inside the underground airbase in Chiashan Mountain in Hualien.
^總統前往金門慰勉戍守國軍弟兄. 中華民國總統府 Office of the President Republic of China (Taiwan) (in Chinese (Taiwan)). 6 September 2011. Retrieved 11 October 2019. 中華民國100年09月06日 中秋節將屆,馬英九總統上午特地前往金門視導陸軍二膽守備隊
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^ ab金門縣土地段名代碼表 (in Chinese (Taiwan)). Department of Land Administration. 5 September 2018. Retrieved 10 August 2019. 地政事務所名稱(代碼) 金門(WA) 鄉鎮市區名稱(代碼) 烈嶼鄉(05){...}段 小段 代碼 備註{...}二擔 0252 更正
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^二膽島營區工程意外 工人遭怪手壓死. 金門縣政府全球資訊網 Kinmen County Government (in Chinese (Taiwan)). 30 April 2018. Retrieved 11 October 2019. 二膽島面積僅0.28平方公里,距離大膽島約800公尺、距離金門本島約12公里、距離廈門約4公里,島上只有駐軍,沒有一般居民。