@misc{ enwiki:1089857859, author = "{Wikipedia contributors}", title = "3C 66A --- {Wikipedia}{,} The Free Encyclopedia", year = "2022", url = "https://en.wikipedia.org/w/index.php?title=3C_66A&oldid=1089857859", note = "[Online; accessed 25-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:1089857859, author = "{Wikipedia contributors}", title = "3C 66A --- {Wikipedia}{,} The Free Encyclopedia", year = "2022", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=3C_66A&oldid=1089857859}", note = "[Online; accessed 25-June-2024]" }