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R. Brent Tully, Hélène M. Courtois, Andrew E. Dolphin, J. Richard Fisher, Philippe Héraudeau, Bradley A. Jacobs, Igor D. Karachentsev, Dmitry Makarov, Lidia Makarova, Sofia Mitronova, Luca Rizzi, Edward J. Shaya, Jenny G. Sorce, Po-Feng Wu: Cosmicflows-2: The Data. In: The Astronomical Journal. 146. Jahrgang, Nr.4, Oktober 2013, 86, S.25, doi:10.1088/0004-6256/146/4/86, arxiv:1307.7213, bibcode:2013AJ....146...86T.
R. Brent Tully, Hélène M. Courtois, Andrew E. Dolphin, J. Richard Fisher, Philippe Héraudeau, Bradley A. Jacobs, Igor D. Karachentsev, Dmitry Makarov, Lidia Makarova, Sofia Mitronova, Luca Rizzi, Edward J. Shaya, Jenny G. Sorce, Po-Feng Wu: Cosmicflows-2: The Data. In: The Astronomical Journal. 146. Jahrgang, Nr.4, Oktober 2013, 86, S.25, doi:10.1088/0004-6256/146/4/86, arxiv:1307.7213, bibcode:2013AJ....146...86T.
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Gérard-Henri de Vaucouleurs, A. de Vaucouleurs, H. G., Jr. Corwin, R. J. Buta, G. Paturel, P. Fouque: Third reference catalogue of bright galaxies, version 9. Springer-Verlag, New York 1991, bibcode:1994AJ....108.2128C (nasa.gov [abgerufen am 25. November 2015]).