*[https://web.archive.org/web/20141217141609/http://isotope.info/ پژوهش و اطلاعات کنونی ایزوتوپها]
*کتاب [[علوم هشتم]] [[دوره ی اول متوسطه]]
{{چپچین}}mother father books{{پایان چپچین}}
*[http://atom.kaeri.re.kr/ Atomgewichte, Zerfallsenergien und Halbwertszeiten aller Isotope] (آلمانی)
*[https://web.archive.org/web/20070825124014/http://www.bt.cdc.gov/radiation/isotopes/ Emergency Preparedness and Response: Radioactive Isotopes] by the CDC ([[Centers for Disease Control and Prevention]])
*[http://www.nndc.bnl.gov/chart/ Chart of Nuclides] Interactive Chart of Nuclides (National Nuclear Data Center)
*[http://www.yoix.org/elements.html Interactive Chart of the nuclides, isotopes and Periodic Table]
*[http://www-nds.iaea.org/livechart The LIVEChart of Nuclides – IAEA] with isotope data.
*[https://web.archive.org/web/20120330123733/http://alsos.wlu.edu/adv_rst.aspx?keyword=isotope&creator=&title=&media=all&genre=all&disc=all&level=all&sortby=relevance&results=10&period=15 Annotated bibliography for isotopes] from the Alsos Digital Library for Nuclear Issues
