@misc{ enwiki:1223261119, author = "{Wikipedia contributors}", title = "Law School, University of São Paulo --- {Wikipedia}{,} The Free Encyclopedia", year = "2024", url = "https://en.wikipedia.org/w/index.php?title=Law_School,_University_of_S%C3%A3o_Paulo&oldid=1223261119", note = "[Online; accessed 22-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:1223261119, author = "{Wikipedia contributors}", title = "Law School, University of São Paulo --- {Wikipedia}{,} The Free Encyclopedia", year = "2024", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=Law_School,_University_of_S%C3%A3o_Paulo&oldid=1223261119}", note = "[Online; accessed 22-June-2024]" }