«NGC 5474». cseligman.com. Ανακτήθηκε στις 11 Αυγούστου 2023.
doi.org
dx.doi.org
Drozdovsky, I. O.; Karachentsev, I. D. (2000). «Photometric distances to six bright resolved galaxies». Astronomy and Astrophysics Supplement142 (3): 425–432. doi:10.1051/aas:2000155. Bibcode: 2000A&AS..142..425D.
R. M. Gonzalez Delgado; E. Perez; C. Tadhunter; J. M. Vilchez; J. M. Rodriguez-Espinosa (2000). «H II Region Population in a Sample of Nearby Galaxies with Nuclear Activity. I. Data and General Results». Astrophysical Journal Supplement108 (1): 155. doi:10.1086/312951. Bibcode: 1997ApJS..108..155G.
harvard.edu
adsabs.harvard.edu
Drozdovsky, I. O.; Karachentsev, I. D. (2000). «Photometric distances to six bright resolved galaxies». Astronomy and Astrophysics Supplement142 (3): 425–432. doi:10.1051/aas:2000155. Bibcode: 2000A&AS..142..425D.
R. M. Gonzalez Delgado; E. Perez; C. Tadhunter; J. M. Vilchez; J. M. Rodriguez-Espinosa (2000). «H II Region Population in a Sample of Nearby Galaxies with Nuclear Activity. I. Data and General Results». Astrophysical Journal Supplement108 (1): 155. doi:10.1086/312951. Bibcode: 1997ApJS..108..155G.