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Citation styles for Proof theory

APA style

Proof theory. (2009, March 16). Glottopedia, . Retrieved 16:39, December 7, 2025 from http://glottopedia.org/index.php?title=Proof_theory&oldid=9163.

MLA style

"Proof theory." Glottopedia, . 16 Mar 2009, 11:55 UTC. 7 Dec 2025, 16:39 <http://glottopedia.org/index.php?title=Proof_theory&oldid=9163>.

MHRA style

Glottopedia contributors, 'Proof theory', Glottopedia, , 16 March 2009, 11:55 UTC, <http://glottopedia.org/index.php?title=Proof_theory&oldid=9163> [accessed 7 December 2025]

Chicago style

Glottopedia contributors, "Proof theory," Glottopedia, , http://glottopedia.org/index.php?title=Proof_theory&oldid=9163 (accessed December 7, 2025).

CBE/CSE style

Glottopedia contributors. Proof theory [Internet]. Glottopedia, ; 2009 Mar 16, 11:55 UTC [cited 2025 Dec 7]. Available from: http://glottopedia.org/index.php?title=Proof_theory&oldid=9163.

Bluebook style

Proof theory, http://glottopedia.org/index.php?title=Proof_theory&oldid=9163 (last visited December 7, 2025).

BibTeX entry

 @misc{ wiki:xxx,
   author = "Glottopedia",
   title = "Proof theory --- Glottopedia{,} ",
   year = "2009",
   url = "http://glottopedia.org/index.php?title=Proof_theory&oldid=9163",
   note = "[Online; accessed 7-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 = "Glottopedia",
   title = "Proof theory --- Glottopedia{,} ",
   year = "2009",
   url = "\url{http://glottopedia.org/index.php?title=Proof_theory&oldid=9163}",
   note = "[Online; accessed 7-December-2025]"
 }