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Citation styles for Semi-major axis

APA style

Semi-major axis. (2013, February 4). Marspedia, . Retrieved 05:04, December 19, 2025 from https://marspedia.org/index.php?title=Semi-major_axis&oldid=8169.

MLA style

"Semi-major axis." Marspedia, . 4 Feb 2013, 18:31 UTC. 19 Dec 2025, 05:04 <https://marspedia.org/index.php?title=Semi-major_axis&oldid=8169>.

MHRA style

Marspedia contributors, 'Semi-major axis', Marspedia, , 4 February 2013, 18:31 UTC, <https://marspedia.org/index.php?title=Semi-major_axis&oldid=8169> [accessed 19 December 2025]

Chicago style

Marspedia contributors, "Semi-major axis," Marspedia, , https://marspedia.org/index.php?title=Semi-major_axis&oldid=8169 (accessed December 19, 2025).

CBE/CSE style

Marspedia contributors. Semi-major axis [Internet]. Marspedia, ; 2013 Feb 4, 18:31 UTC [cited 2025 Dec 19]. Available from: https://marspedia.org/index.php?title=Semi-major_axis&oldid=8169.

Bluebook style

Semi-major axis, https://marspedia.org/index.php?title=Semi-major_axis&oldid=8169 (last visited December 19, 2025).

BibTeX entry

 @misc{ wiki:xxx,
   author = "Marspedia",
   title = "Semi-major axis --- Marspedia{,} ",
   year = "2013",
   url = "https://marspedia.org/index.php?title=Semi-major_axis&oldid=8169",
   note = "[Online; accessed 19-December-2025]"
 }

When using the LaTeX package url (\usepackage{url} somewhere in the preamble) which tends to give much more nicely formatted web addresses, the following may be preferred:

 @misc{ wiki:xxx,
   author = "Marspedia",
   title = "Semi-major axis --- Marspedia{,} ",
   year = "2013",
   url = "\url{https://marspedia.org/index.php?title=Semi-major_axis&oldid=8169}",
   note = "[Online; accessed 19-December-2025]"
 }