R CrB. In: VSX. AAVSO, abgerufen am 31. Oktober 2018.
doi.org
Steve B. Howell, Travis A. Rector, Donald Walter: Optical Spectroscopy at Deep Light Minimum of R Coronae Borealis. In: Publications of the Astronomical Society of the Pacific. 125. Jahrgang, Nr.930, 2013, S.879–888, doi:10.1086/672163, bibcode:2013PASP..125..879H.
C. L. Watson: The International Variable Star Index (VSX). In: The Society for Astronomical Sciences 25th Annual Symposium on Telescope Science. Held May 23–25. 25. Jahrgang, 2006, S.47, bibcode:2006SASS...25...47W.
Steve B. Howell, Travis A. Rector, Donald Walter: Optical Spectroscopy at Deep Light Minimum of R Coronae Borealis. In: Publications of the Astronomical Society of the Pacific. 125. Jahrgang, Nr.930, 2013, S.879–888, doi:10.1086/672163, bibcode:2013PASP..125..879H.