@misc{ enwiki:673612042, author = "{Wikipedia contributors}", title = "Voluntary action --- {Wikipedia}{,} The Free Encyclopedia", year = "2015", url = "https://en.wikipedia.org/w/index.php?title=Voluntary_action&oldid=673612042", note = "[Online; accessed 7-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:673612042, author = "{Wikipedia contributors}", title = "Voluntary action --- {Wikipedia}{,} The Free Encyclopedia", year = "2015", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=Voluntary_action&oldid=673612042}", note = "[Online; accessed 7-July-2024]" }