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Citation styles for Universal Product Code

APA style

Universal Product Code. (2019, August 3). zaoniao, . Retrieved 09:39, May 15, 2026 from http://en.zaoniao.it/index.php?title=Universal_Product_Code&oldid=7377.

MLA style

"Universal Product Code." zaoniao, . 3 Aug 2019, 08:05 UTC. 15 May 2026, 09:39 <http://en.zaoniao.it/index.php?title=Universal_Product_Code&oldid=7377>.

MHRA style

zaoniao contributors, 'Universal Product Code', zaoniao, , 3 August 2019, 08:05 UTC, <http://en.zaoniao.it/index.php?title=Universal_Product_Code&oldid=7377> [accessed 15 May 2026]

Chicago style

zaoniao contributors, "Universal Product Code," zaoniao, , http://en.zaoniao.it/index.php?title=Universal_Product_Code&oldid=7377 (accessed May 15, 2026).

CBE/CSE style

zaoniao contributors. Universal Product Code [Internet]. zaoniao, ; 2019 Aug 3, 08:05 UTC [cited 2026 May 15]. Available from: http://en.zaoniao.it/index.php?title=Universal_Product_Code&oldid=7377.

Bluebook style

Universal Product Code, http://en.zaoniao.it/index.php?title=Universal_Product_Code&oldid=7377 (last visited May 15, 2026).

BibTeX entry

 @misc{ wiki:xxx,
   author = "zaoniao",
   title = "Universal Product Code --- zaoniao{,} ",
   year = "2019",
   url = "http://en.zaoniao.it/index.php?title=Universal_Product_Code&oldid=7377",
   note = "[Online; accessed 15-May-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 = "zaoniao",
   title = "Universal Product Code --- zaoniao{,} ",
   year = "2019",
   url = "\url{http://en.zaoniao.it/index.php?title=Universal_Product_Code&oldid=7377}",
   note = "[Online; accessed 15-May-2026]"
 }