@misc{ enwiki:1171094857, author = "{Wikipedia contributors}", title = "Model Cities Program --- {Wikipedia}{,} The Free Encyclopedia", year = "2023", url = "https://en.wikipedia.org/w/index.php?title=Model_Cities_Program&oldid=1171094857", note = "[Online; accessed 21-June-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:1171094857, author = "{Wikipedia contributors}", title = "Model Cities Program --- {Wikipedia}{,} The Free Encyclopedia", year = "2023", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=Model_Cities_Program&oldid=1171094857}", note = "[Online; accessed 21-June-2024]" }