@misc{ enwiki:585270215, author = "{Wikipedia contributors}", title = "Krępa --- {Wikipedia}{,} The Free Encyclopedia", year = "2013", url = "https://en.wikipedia.org/w/index.php?title=Kr%C4%99pa&oldid=585270215", 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:585270215, author = "{Wikipedia contributors}", title = "Krępa --- {Wikipedia}{,} The Free Encyclopedia", year = "2013", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=Kr%C4%99pa&oldid=585270215}", note = "[Online; accessed 9-July-2024]" }