Венера — разлика између измена

* {{Cite book| author1 = Davis, Andrew M. | author2 = Holland, Heinrich D. | author3 = Turekian, Karl K. | title = Meteorites, comets, and planets| publisher = Elsevier| year = 2005| isbn = 978-0-08-044720-9| pages = 489}}

* {{Cite book | ref = harv| first = Michel| last = Van Pelt| year = 2006| title = Space invaders: how robotic spacecraft explore the Solar System| publisher = Springer| isbn = 978-0-387-33232-1| pages = 186–189}}

* {{Cite book | ref = harv| title = History of oriental astronomy: proceedings of the joint discussion-17 at the 23rd General Assembly of the International Astronomical Union, organised by the Commission 41 (History of Astronomy), held in Kyoto, August 25–26, 1997| author = S. M. Razaullah Ansari| publisher = Springer Science+Business Media| year = 2002| isbn = 978-1-4020-0657-9| pages = 137}}

* {{Cite book | ref = harv| author = Pliny the Elder| title = Natural History II:36–37| others = translated by John F. Healy| publisher = Penguin| location = Harmondsworth, Middlesex, UK| year = 1991| pages = 15–16}}

* {{Cite book | ref = harv| last1 = Lakatos| first1 = Imre| last2 = Worrall| first2 = John| last3 = Currie| first3 = Gregory| editor1 = Worrall, John | editor2 = Currie, Gregory | year = 1980| title=The Methodology of Scientific Research Programmes| publisher=Cambridge University Press| isbn = 978-0-521-28031-0| pages = 186}}

* {{Cite book | ref = harv| last = Bakich| first = Michael E.| year = 2000| title = The Cambridge planetary handbook| publisher = Cambridge University Press| isbn = 978-0-521-63280-5| pages = 50}}