Graham, Alister W. (Kasım 2008), "Populating the Galaxy Velocity Dispersion - Supermassive Black Hole Mass Diagram: A Catalogue of (Mbh, σ) Values", Publications of the Astronomical Society of Australia, 25 (4), ss. 167-175, arXiv:0807.2549 $2, Bibcode:2008PASA...25..167G, doi:10.1071/AS08013.
Graham, Alister W. (Kasım 2008), "Populating the Galaxy Velocity Dispersion - Supermassive Black Hole Mass Diagram: A Catalogue of (Mbh, σ) Values", Publications of the Astronomical Society of Australia, 25 (4), ss. 167-175, arXiv:0807.2549 $2, Bibcode:2008PASA...25..167G, doi:10.1071/AS08013.
harvard.edu
adsabs.harvard.edu
Graham, Alister W. (Kasım 2008), "Populating the Galaxy Velocity Dispersion - Supermassive Black Hole Mass Diagram: A Catalogue of (Mbh, σ) Values", Publications of the Astronomical Society of Australia, 25 (4), ss. 167-175, arXiv:0807.2549 $2, Bibcode:2008PASA...25..167G, doi:10.1071/AS08013.
seds.org
spider.seds.org
"SEDS". Revised NGC Data for NGC 1023 (İngilizce). 4 Mart 2016 tarihinde kaynağından arşivlendi.
web.archive.org
"SEDS". Revised NGC Data for NGC 1023 (İngilizce). 4 Mart 2016 tarihinde kaynağından arşivlendi.