@misc{ enwiki:566663989, author = "{Wikipedia contributors}", title = "MON 863 --- {Wikipedia}{,} The Free Encyclopedia", year = "2013", url = "https://en.wikipedia.org/w/index.php?title=MON_863&oldid=566663989", note = "[Online; accessed 9-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:566663989, author = "{Wikipedia contributors}", title = "MON 863 --- {Wikipedia}{,} The Free Encyclopedia", year = "2013", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=MON_863&oldid=566663989}", note = "[Online; accessed 9-July-2024]" }