↑Haec appellatio a Vicipaediano e lingua indigena in sermonem Latinum conversa est. Extra Vicipaediam huius locutionis testificatio vix inveniri potest.
↑Edwin Hubble, The Realm of the Nebulae (Novo Portu: Yale University Press, 1936), titulus capituli 6 Textus
Sidney van den Bergh, The Galaxies of the Local Group. Cantabrigiae: Cambridge University Press, 2000 (Paginae selectae apud Google Books)
Sidney van den Bergh, "Updated Information on the Local Group" in Publications of the Astronomical Society of the Pacific vol. 112 (2000) pp. 529-536 Textus
I. D. Karachentsev, V. E. Karachentseva, W. K. Hutchmeier, D. I. Makarov, "A Catalog of Neighboring Galaxies" in Astronomical Journal vol. 127 (2004) pp. 2031–2068 Textus