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Citation styles for Hard water

APA style

Hard water. (2006, February 8). Opengenome.net, . Retrieved 13:50, December 6, 2025 from http://Opengenome.net/index.php?title=Hard_water&oldid=5340.

MLA style

"Hard water." Opengenome.net, . 8 Feb 2006, 05:22 UTC. 6 Dec 2025, 13:50 <http://Opengenome.net/index.php?title=Hard_water&oldid=5340>.

MHRA style

Opengenome.net contributors, 'Hard water', Opengenome.net, , 8 February 2006, 05:22 UTC, <http://Opengenome.net/index.php?title=Hard_water&oldid=5340> [accessed 6 December 2025]

Chicago style

Opengenome.net contributors, "Hard water," Opengenome.net, , http://Opengenome.net/index.php?title=Hard_water&oldid=5340 (accessed December 6, 2025).

CBE/CSE style

Opengenome.net contributors. Hard water [Internet]. Opengenome.net, ; 2006 Feb 8, 05:22 UTC [cited 2025 Dec 6]. Available from: http://Opengenome.net/index.php?title=Hard_water&oldid=5340.

Bluebook style

Hard water, http://Opengenome.net/index.php?title=Hard_water&oldid=5340 (last visited December 6, 2025).

BibTeX entry

 @misc{ wiki:xxx,
   author = "Opengenome.net",
   title = "Hard water --- Opengenome.net{,} ",
   year = "2006",
   url = "http://Opengenome.net/index.php?title=Hard_water&oldid=5340",
   note = "[Online; accessed 6-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 = "Opengenome.net",
   title = "Hard water --- Opengenome.net{,} ",
   year = "2006",
   url = "\url{http://Opengenome.net/index.php?title=Hard_water&oldid=5340}",
   note = "[Online; accessed 6-December-2025]"
 }