@misc{ enwiki:1209546517, author = "{Wikipedia contributors}", title = "List of things named after Adam Mickiewicz --- {Wikipedia}{,} The Free Encyclopedia", year = "2024", url = "https://en.wikipedia.org/w/index.php?title=List_of_things_named_after_Adam_Mickiewicz&oldid=1209546517", note = "[Online; accessed 22-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:1209546517, author = "{Wikipedia contributors}", title = "List of things named after Adam Mickiewicz --- {Wikipedia}{,} The Free Encyclopedia", year = "2024", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=List_of_things_named_after_Adam_Mickiewicz&oldid=1209546517}", note = "[Online; accessed 22-June-2024]" }