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Citation styles for ISBN

APA style

ISBN. (2020, May 2). blackwiki, . Retrieved 11:55, July 6, 2026 from https://blackwiki.org/index.php?title=ISBN&oldid=108.

MLA style

"ISBN." blackwiki, . 2 May 2020, 20:37 UTC. 6 Jul 2026, 11:55 <https://blackwiki.org/index.php?title=ISBN&oldid=108>.

MHRA style

blackwiki contributors, 'ISBN', blackwiki, , 2 May 2020, 20:37 UTC, <https://blackwiki.org/index.php?title=ISBN&oldid=108> [accessed 6 July 2026]

Chicago style

blackwiki contributors, "ISBN," blackwiki, , https://blackwiki.org/index.php?title=ISBN&oldid=108 (accessed July 6, 2026).

CBE/CSE style

blackwiki contributors. ISBN [Internet]. blackwiki, ; 2020 May 2, 20:37 UTC [cited 2026 Jul 6]. Available from: https://blackwiki.org/index.php?title=ISBN&oldid=108.

Bluebook style

ISBN, https://blackwiki.org/index.php?title=ISBN&oldid=108 (last visited July 6, 2026).

BibTeX entry

 @misc{ wiki:xxx,
   author = "blackwiki",
   title = "ISBN --- blackwiki{,} ",
   year = "2020",
   url = "https://blackwiki.org/index.php?title=ISBN&oldid=108",
   note = "[Online; accessed 6-July-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 = "blackwiki",
   title = "ISBN --- blackwiki{,} ",
   year = "2020",
   url = "\url{https://blackwiki.org/index.php?title=ISBN&oldid=108}",
   note = "[Online; accessed 6-July-2026]"
 }