@misc{ enwiki:1166194927, author = "{Wikipedia contributors}", title = "Mamie George S. Williams --- {Wikipedia}{,} The Free Encyclopedia", year = "2023", url = "https://en.wikipedia.org/w/index.php?title=Mamie_George_S._Williams&oldid=1166194927", note = "[Online; accessed 12-July-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:1166194927, author = "{Wikipedia contributors}", title = "Mamie George S. Williams --- {Wikipedia}{,} The Free Encyclopedia", year = "2023", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=Mamie_George_S._Williams&oldid=1166194927}", note = "[Online; accessed 12-July-2024]" }