@misc{ enwiki:839538050, author = "{Wikipedia contributors}", title = "Serge Groussard --- {Wikipedia}{,} The Free Encyclopedia", year = "2018", url = "https://en.wikipedia.org/w/index.php?title=Serge_Groussard&oldid=839538050", note = "[Online; accessed 11-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:839538050, author = "{Wikipedia contributors}", title = "Serge Groussard --- {Wikipedia}{,} The Free Encyclopedia", year = "2018", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=Serge_Groussard&oldid=839538050}", note = "[Online; accessed 11-July-2024]" }