^Cotera, A.; Hester, J.; Healy, K.; Snider, K.; et al. Using Spitzer IRAC observations to Compare Modes of Star Formation in G305.35+0.7 and NGC 2174/5. Triggered Star Formation in a Turbulent ISM, International Astronomical Union Symposium. Prague, Czech Republic. August 2006 (2006). Bibcode:2006IAUS..237E..98C. S237, #98.请检查|publication-date=中的日期值 (帮助)[失效連結]
^Robert Burnham, Jr, Burnham's Celestial Handbook, Dover, 1978, p. 1280.
^Public Database. NGC/IC Project. Results for NGC 2174 and NGC 2175. [12 January 2014]. (原始内容存档于2009-05-28).