Citation styles for Opium

APA style

Opium. (2006, January 26). Opengenome.net, . Retrieved 15:52, February 3, 2026 from http://Opengenome.net/index.php?title=Opium&oldid=3098.

MLA style

"Opium." Opengenome.net, . 26 Jan 2006, 07:11 UTC. 3 Feb 2026, 15:52 <http://Opengenome.net/index.php?title=Opium&oldid=3098>.

MHRA style

Opengenome.net contributors, 'Opium', Opengenome.net, , 26 January 2006, 07:11 UTC, <http://Opengenome.net/index.php?title=Opium&oldid=3098> [accessed 3 February 2026]

Chicago style

Opengenome.net contributors, "Opium," Opengenome.net, , http://Opengenome.net/index.php?title=Opium&oldid=3098 (accessed February 3, 2026).

CBE/CSE style

Opengenome.net contributors. Opium [Internet]. Opengenome.net, ; 2006 Jan 26, 07:11 UTC [cited 2026 Feb 3]. Available from: http://Opengenome.net/index.php?title=Opium&oldid=3098.

Bluebook style

Opium, http://Opengenome.net/index.php?title=Opium&oldid=3098 (last visited February 3, 2026).

BibTeX entry

 @misc{ wiki:xxx,
   author = "Opengenome.net",
   title = "Opium --- Opengenome.net{,} ",
   year = "2006",
   url = "http://Opengenome.net/index.php?title=Opium&oldid=3098",
   note = "[Online; accessed 3-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 = "Opium --- Opengenome.net{,} ",
   year = "2006",
   url = "\url{http://Opengenome.net/index.php?title=Opium&oldid=3098}",
   note = "[Online; accessed 3-February-2026]"
 }