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Citation styles for Letter 4509

APA style

Letter 4509. (2022, July 12). Tchaikovsky Research, . Retrieved 05:14, February 18, 2026 from https://en.tchaikovsky-research.net/index.php?title=Letter_4509&oldid=52906.

MLA style

"Letter 4509." Tchaikovsky Research, . 12 Jul 2022, 12:47 UTC. 18 Feb 2026, 05:14 <https://en.tchaikovsky-research.net/index.php?title=Letter_4509&oldid=52906>.

MHRA style

Tchaikovsky Research contributors, 'Letter 4509', Tchaikovsky Research, , 12 July 2022, 12:47 UTC, <https://en.tchaikovsky-research.net/index.php?title=Letter_4509&oldid=52906> [accessed 18 February 2026]

Chicago style

Tchaikovsky Research contributors, "Letter 4509," Tchaikovsky Research, , https://en.tchaikovsky-research.net/index.php?title=Letter_4509&oldid=52906 (accessed February 18, 2026).

CBE/CSE style

Tchaikovsky Research contributors. Letter 4509 [Internet]. Tchaikovsky Research, ; 2022 Jul 12, 12:47 UTC [cited 2026 Feb 18]. Available from: https://en.tchaikovsky-research.net/index.php?title=Letter_4509&oldid=52906.

Bluebook style

Letter 4509, https://en.tchaikovsky-research.net/index.php?title=Letter_4509&oldid=52906 (last visited February 18, 2026).

BibTeX entry

 @misc{ wiki:xxx,
   author = "Tchaikovsky Research",
   title = "Letter 4509 --- Tchaikovsky Research{,} ",
   year = "2022",
   url = "https://en.tchaikovsky-research.net/index.php?title=Letter_4509&oldid=52906",
   note = "[Online; accessed 18-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 = "Tchaikovsky Research",
   title = "Letter 4509 --- Tchaikovsky Research{,} ",
   year = "2022",
   url = "\url{https://en.tchaikovsky-research.net/index.php?title=Letter_4509&oldid=52906}",
   note = "[Online; accessed 18-February-2026]"
 }