@misc{ enwiki:1171743204, author = "{Wikipedia contributors}", title = "2019 Prince Edward Island electoral reform referendum --- {Wikipedia}{,} The Free Encyclopedia", year = "2023", url = "https://en.wikipedia.org/w/index.php?title=2019_Prince_Edward_Island_electoral_reform_referendum&oldid=1171743204", 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:1171743204, author = "{Wikipedia contributors}", title = "2019 Prince Edward Island electoral reform referendum --- {Wikipedia}{,} The Free Encyclopedia", year = "2023", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=2019_Prince_Edward_Island_electoral_reform_referendum&oldid=1171743204}", note = "[Online; accessed 12-July-2024]" }