Nota dan rujukan Anjakan biru

  1. Kuhn, Karl F. (2004). In Quest of the Universe. Jones & Bartlett Publishers. m/s. 122–3. ISBN 0-7637-0810-0.  Parameter |coauthors= tidak diketahui diabaikan (guna |author=) (bantuan)
  2. 1 2 3 Aoki, Kentaro (January 2005). "The Largest Blueshifts of the [O III] Emission Line in Two Narrow-Line Quasars". Astrophysical Journal. 618 (2): 601–608. arXiv:astro-ph/0409546 . Bibcode:2005ApJ...618..601A. doi:10.1086/426075.  Parameter |coauthors= tidak diketahui diabaikan (guna |author=) (bantuan); |access-date= memerlukan |url= (bantuan)
  3. Teks asal: "Photons climbing out of a gravitating object become less energetic. This loss of energy is known as a "redshifting", as photons in the visible spectrum would appear more red. Similarly, photons falling into a gravitational field become more energetic and exhibit a blueshifting. ... Note that the magnitude of the redshifting (blueshifting) effect is not a function of the emitted angle or the received angle of the photon—it depends only on how far radially the photon had to climb out of (fall into) the potential well."
  4. Bonometto, Silvio; Gorini, Vittorio; Moschella, Ugo (2002). Modern Cosmology. CRC Press. ISBN 978-0-7503-0810-6|access-date= memerlukan |url= (bantuan)