Tremko, J.; Bakos, G. A. (November 1986), "The semiregular variable 57 Pegasi", Journal of the Royal Astronomical Society of Canada, 80: 230–239, Bibcode:1986JRASC..80..230T.
Bakos, G. A. (1978), "Spectrographic and Photometric Investigation of 57 Pegasi", Bulletin of the Astronomical Institute of Czechoslovakia, 29: 252, Bibcode:1978BAICz..29..252B.