@misc{ enwiki:195374969, author = "{Wikipedia contributors}", title = "Back-cross --- {Wikipedia}{,} The Free Encyclopedia", year = "2008", url = "https://en.wikipedia.org/w/index.php?title=Back-cross&oldid=195374969", note = "[Online; accessed 28-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:195374969, author = "{Wikipedia contributors}", title = "Back-cross --- {Wikipedia}{,} The Free Encyclopedia", year = "2008", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=Back-cross&oldid=195374969}", note = "[Online; accessed 28-June-2024]" }