@misc{ enwiki:1171686176, author = "{Wikipedia contributors}", title = "T. I. Itkonen --- {Wikipedia}{,} The Free Encyclopedia", year = "2023", url = "https://en.wikipedia.org/w/index.php?title=T._I._Itkonen&oldid=1171686176", note = "[Online; accessed 27-June-2024]" }
url
(\usepackage{url}
somewhere in the preamble), which tends to give much more nicely formatted web addresses, the following may be preferred:
@misc{ enwiki:1171686176, author = "{Wikipedia contributors}", title = "T. I. Itkonen --- {Wikipedia}{,} The Free Encyclopedia", year = "2023", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=T._I._Itkonen&oldid=1171686176}", note = "[Online; accessed 27-June-2024]" }