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↑ "ARI Data Base For Nearby Stars". Astronomisches Rechen-Institut Heidelberg. Dicapai 18 June 2012.

Levy, David H. (2005). Deep Sky Objects. Prometheus Books. ISBN 1-59102-361-0.
H. A. Rey, The Stars — A New Way To See Them. Edisi Besar Sedunia. Houghton Mifflin, Boston, 1997. ISBN 0-395-24830-2.
Ridpath, Ian; Tirion, Wil (2001), Stars and Planets Guide, Akhbar Universiti Princeton, ISBN 0-691-08913-2
Ian Ridpath dan Wil Tirion (2007). Stars and Planets Guide, Collins, London. ISBN 978-0-00-725120-9. Akhbar Universiti Princeton, Princeton. ISBN 978-0-691-13556-4.

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