NASA/IPAC Extragalactic Database: Results for NGC 7320 [online]. [cit. 2017-02-14]. Dostupné online. (anglicky)
doi.org
Armando Gil de Paz, Luciana Bianchi, Patrick Morrissey, Samuel Boissier, David Schiminovich, Barry F. Madore, David Thilker, Timothy Heckman, Alessandro Boselli, Robert Rich, Alex Szalay, Mark Seibert, Todd A. Small, Bruno Milliard, Tim Conrow, Soo-Chang Rey, Sukyoung Yi, Young-Wook Lee: The GALEX Ultraviolet Atlas of Nearby Galaxies. In: The Astrophysical Journal Supplement Series. prosinec 2007. DOI10.1086/516636.
A photometric catalog of compact groups of galaxies. In: The Astrophysical Journal Supplement Series. 1989. DOI10.1086/191354.
Thomas H. Jarrett, John M. Carpenter, John E. Gizis, Carol Lonsdale: The Two Micron All Sky Survey (2MASS). In: The Astronomical Journal. únor 2006. DOI10.1086/498708.
ngcicproject.org
The NGC/IC Project: NGC 7320. Dostupné online. [cit. 2017-02-14].
web.archive.org
The NGC/IC Project: Results for NGC 7320 [online]. [cit. 2017-02-14]. Dostupné v archivu pořízeném dne 2009-05-28. (anglicky)