^ 1.01.11.21.31.41.51.61.71.8NASA/IPAC Extragalactic Database. Results for NGC 3949. [2006-11-16]. (原始内容于2011-05-14).
^R. B. Tully. Nearby Galaxies Catalog. Cambridge: Cambridge University Press. 1988. ISBN 0-521-35299-1.
^A. Garcia. General study of group membership. II - Determination of nearby groups. Astronomy and Astrophysics Supplement. 1993, 100: 47–90 [2020-09-26]. (原始内容于2019-12-13).
^G. Giuricin, C. Marinoni, L. Ceriani, A. Pisani. Nearby Optical Galaxies: Selection of the Sample and Identification of Groups. Astrophysical Journal. 2000, 543: 178–194 [2011-01-29]. doi:10.1086/317070. (原始内容于2019-01-21).