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Citation styles for Vacuum tube

APA style

Vacuum tube. (2006, February 1). Opengenome.net, . Retrieved 19:46, February 4, 2026 from http://Opengenome.net/index.php?title=Vacuum_tube&oldid=3573.

MLA style

"Vacuum tube." Opengenome.net, . 1 Feb 2006, 00:35 UTC. 4 Feb 2026, 19:46 <http://Opengenome.net/index.php?title=Vacuum_tube&oldid=3573>.

MHRA style

Opengenome.net contributors, 'Vacuum tube', Opengenome.net, , 1 February 2006, 00:35 UTC, <http://Opengenome.net/index.php?title=Vacuum_tube&oldid=3573> [accessed 4 February 2026]

Chicago style

Opengenome.net contributors, "Vacuum tube," Opengenome.net, , http://Opengenome.net/index.php?title=Vacuum_tube&oldid=3573 (accessed February 4, 2026).

CBE/CSE style

Opengenome.net contributors. Vacuum tube [Internet]. Opengenome.net, ; 2006 Feb 1, 00:35 UTC [cited 2026 Feb 4]. Available from: http://Opengenome.net/index.php?title=Vacuum_tube&oldid=3573.

Bluebook style

Vacuum tube, http://Opengenome.net/index.php?title=Vacuum_tube&oldid=3573 (last visited February 4, 2026).

BibTeX entry

 @misc{ wiki:xxx,
   author = "Opengenome.net",
   title = "Vacuum tube --- Opengenome.net{,} ",
   year = "2006",
   url = "http://Opengenome.net/index.php?title=Vacuum_tube&oldid=3573",
   note = "[Online; accessed 4-February-2026]"
 }

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 = "Opengenome.net",
   title = "Vacuum tube --- Opengenome.net{,} ",
   year = "2006",
   url = "\url{http://Opengenome.net/index.php?title=Vacuum_tube&oldid=3573}",
   note = "[Online; accessed 4-February-2026]"
 }