Rujukan Venera_7

  1. ↑ "Science: Onward from Venus". TIME. 8 February 1971. Dicapai pada 2 January 2013.
  2. 1 2 3 4 5 6 7 8 9 10 11 Reeves, Robert (1994). The Superpower Space Race: An Explosive Rivalry through the Solar System. Plenum Press. halaman 211–215. ISBN 0-306-44768-1.
  3. ↑ Patrick Moore, The data book of astronomy. CRC Press, 2000, p. 92.
    See Table 5-5, Missions to Venus, 1961-2000. Landing near Navka Planitia
  4. 1 2 Larry Klaes, THE SOVIETS AND VENUS, PART 1, 1993.