外部連結
- [https://www.cfa.harvard.edu/imagelist/2009-23 Pulsations of χ Cygni]
- [https://www.aavso.org/vsx/index.php?view=detail.top&oid=13285 VSX page for χ Cygni]
- http://jumk.de/astronomie/special-stars/chi-cygni.shtml
- [https://web.archive.org/web/20130602064757/http://www.popastro.com/news/newsdetail.php?id_nw=174 Spot the difference – Chi Cyg at max] (30 Apr 2013)
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