Goodricke, J.; Bayer «A Series of Observations on, and a Discovery of, the Period of the Variation of the Light of the Star Marked Formula by Bayer, Near the Head of Cepheus. In a Letter from John Goodricke, Esq. To Nevil Maskelyne, D. D. F. R. S. And Astronomer Royal». Philosophical Transactions of the Royal Society of London, 76, 1786, pàg. 48–61. DOI: 10.1098/rstl.1786.0002.
Majaess, D.; Turner, D.; Gieren, W. «New Evidence Supporting Cluster Membership for the Keystone Calibrator Delta Cephei». Astrophysical Journal, 747, 2, 2012, p. 145. DOI: 10.1088/0004-637X/747/2/145.
de Zeeuw, P. T.; Hoogerwerf, R.; de Bruijne, J. H. J.; Brown, A. G. A. «A HIPPARCOS Census of the Nearby OB Associations». Astronomical Journal, 117, 1, 1999, p. 354–399. DOI: 10.1086/300682.
Benedict, G. Fritz; McArthur, B. E.; Fredrick, L. W.; Harrison, T. E. «Astrometry with the Hubble Space Telescope: A Parallax of the Fundamental Distance Calibrator δ Cephei». Astronomical Journal, 124, 3, 2002, p. 1695. DOI: 10.1086/342014.
Benedict, G. Fritz; McArthur, B. E.; Fredrick, L. W.; Harrison, T. E. «Astrometry with the Hubble Space Telescope: A Parallax of the Fundamental Distance Calibrator δ Cephei». The Astronomical Journal, 124, 3, 2002, p. 1695–1705. DOI: 10.1086/342014.
Anderson, R.I. «Revealing δ Cephei's Secret Companion and Intriguing Past». The Astrophysical Journal, 804, 2, 5-2015, p. 144–155. DOI: 10.1088/0004-637X/804/2/144.
Fernie, J.D. «Classical Cepheids with companions. I. Delta Cephei». The Astronomical Journal, 71, 1966, p. 119–122. DOI: 10.1086/109866.
Matthews, L. D.; Marengo, M.; Evans, N. R.; Bono, G. «New Evidence for Mass Loss from δ Cephei from H I 21 cm Line Observations». The Astrophysical Journal, 744, 1, 1-2012, p. 53. DOI: 10.1088/0004-637X/744/1/53.
Neilson, Hilding R.; Lester, John B. «On the Enhancement of Mass Loss in Cepheids Due to Radial Pulsation». The Astrophysical Journal, 684, 1, 9-2008, p. 569–587. DOI: 10.1086/588650.
Percy, John R «Astronomers Celebrate Cepheid Bicentenary». Journal of the Royal Astronomical Society of Canada Newsletter, 78, 12-1984, pàg. L76. Bibcode: 1984JRASC..78L..76P.
Samus, N. N.; Durlevich, O. V. «GCVS - General Catalog of Variable Stars», 01-04-2011. [Consulta: 1r abril 2012]. Nota: cerqueu a 'del cep' després de seleccionar el camp 'period'.
Afirmat a: Gaia Early Data Release 3. Indicat a la font segons: SIMBAD. Llengua del terme, de l'obra o del nom: anglès. Data de publicació: 3 desembre 2020.