Airy, G. B. (November 13, 1846). "Account of some circumstances historically connected with the discovery of the planet exterior to Uranus". Monthly Notices of the Royal Astronomical Society. Blackwell Publishing. 7: 121–144. Bibcode:1846MNRAS...7..121A. doi:10.1002/asna.18470251002.
Challis, Rev. J. (November 13, 1846). "Account of observations at the Cambridge observatory for detecting the planet exterior to Uranus". Monthly Notices of the Royal Astronomical Society. Blackwell Publishing. 7: 145–149. Bibcode:1846MNRAS...7..145C. doi:10.1093/mnras/7.9.145.
Adams, J. C. (November 13, 1846). "Explanation of the observed irregularities in the motion of Uranus, on the hypothesis of disturbance by a more distant planet". Monthly Notices of the Royal Astronomical Society. Blackwell Publishing. 7: 149–152. Bibcode:1846MNRAS...7..149A. doi:10.1093/mnras/7.9.149.
Airy, G. B. (November 13, 1846). "Account of some circumstances historically connected with the discovery of the planet exterior to Uranus". Monthly Notices of the Royal Astronomical Society. Blackwell Publishing. 7: 121–144. Bibcode:1846MNRAS...7..121A. doi:10.1002/asna.18470251002.
Challis, Rev. J. (November 13, 1846). "Account of observations at the Cambridge observatory for detecting the planet exterior to Uranus". Monthly Notices of the Royal Astronomical Society. Blackwell Publishing. 7: 145–149. Bibcode:1846MNRAS...7..145C. doi:10.1093/mnras/7.9.145.
Adams, J. C. (November 13, 1846). "Explanation of the observed irregularities in the motion of Uranus, on the hypothesis of disturbance by a more distant planet". Monthly Notices of the Royal Astronomical Society. Blackwell Publishing. 7: 149–152. Bibcode:1846MNRAS...7..149A. doi:10.1093/mnras/7.9.149.
nasa.gov
nssdc.gsfc.nasa.gov
Williams, David R. (September 1, 2004). "Neptune Fact Sheet". NASA. Retrieved 2007-08-14.