@misc{ enwiki:1210004257, author = "{Wikipedia contributors}", title = "List of state leaders in the 10th-century Holy Roman Empire --- {Wikipedia}{,} The Free Encyclopedia", year = "2024", url = "https://en.wikipedia.org/w/index.php?title=List_of_state_leaders_in_the_10th-century_Holy_Roman_Empire&oldid=1210004257", 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:1210004257, author = "{Wikipedia contributors}", title = "List of state leaders in the 10th-century Holy Roman Empire --- {Wikipedia}{,} The Free Encyclopedia", year = "2024", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=List_of_state_leaders_in_the_10th-century_Holy_Roman_Empire&oldid=1210004257}", note = "[Online; accessed 12-July-2024]" }