Citation styles for Sigma factor

APA style

Sigma factor. (2006, March 18). Opengenome.net, . Retrieved 16:23, February 4, 2026 from http://Opengenome.net/index.php?title=Sigma_factor&oldid=8998.

MLA style

"Sigma factor." Opengenome.net, . 18 Mar 2006, 07:45 UTC. 4 Feb 2026, 16:23 <http://Opengenome.net/index.php?title=Sigma_factor&oldid=8998>.

MHRA style

Opengenome.net contributors, 'Sigma factor', Opengenome.net, , 18 March 2006, 07:45 UTC, <http://Opengenome.net/index.php?title=Sigma_factor&oldid=8998> [accessed 4 February 2026]

Chicago style

Opengenome.net contributors, "Sigma factor," Opengenome.net, , http://Opengenome.net/index.php?title=Sigma_factor&oldid=8998 (accessed February 4, 2026).

CBE/CSE style

Opengenome.net contributors. Sigma factor [Internet]. Opengenome.net, ; 2006 Mar 18, 07:45 UTC [cited 2026 Feb 4]. Available from: http://Opengenome.net/index.php?title=Sigma_factor&oldid=8998.

Bluebook style

Sigma factor, http://Opengenome.net/index.php?title=Sigma_factor&oldid=8998 (last visited February 4, 2026).

BibTeX entry

 @misc{ wiki:xxx,
   author = "Opengenome.net",
   title = "Sigma factor --- Opengenome.net{,} ",
   year = "2006",
   url = "http://Opengenome.net/index.php?title=Sigma_factor&oldid=8998",
   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 = "Sigma factor --- Opengenome.net{,} ",
   year = "2006",
   url = "\url{http://Opengenome.net/index.php?title=Sigma_factor&oldid=8998}",
   note = "[Online; accessed 4-February-2026]"
 }