Benedict, G. Fritz και άλλοι. (March 2002). «NGC 4314. IV. Photometry of Star Clusters with the Hubble Space Telescope: History of Star Formation in the Vicinity of a Nuclear Ring». The Astronomical Journal123 (3): 1411–1432. doi:10.1086/338895. Bibcode: 2002AJ....123.1411B.
Ashby, M. L. N. και άλλοι. (September 2011). «The Star Formation Reference Survey. I. Survey Description and Basic Data». Publications of the Astronomical Society of the Pacific123 (907): 1011. doi:10.1086/661920. Bibcode: 2011PASP..123.1011A.
Benedict, G. Fritz και άλλοι. (March 2002). «NGC 4314. IV. Photometry of Star Clusters with the Hubble Space Telescope: History of Star Formation in the Vicinity of a Nuclear Ring». The Astronomical Journal123 (3): 1411–1432. doi:10.1086/338895. Bibcode: 2002AJ....123.1411B.
Ashby, M. L. N. και άλλοι. (September 2011). «The Star Formation Reference Survey. I. Survey Description and Basic Data». Publications of the Astronomical Society of the Pacific123 (907): 1011. doi:10.1086/661920. Bibcode: 2011PASP..123.1011A.