@misc{ enwiki:564927638, author = "{Wikipedia contributors}", title = "Jewels of Elizabeth II --- {Wikipedia}{,} The Free Encyclopedia", year = "2013", url = "https://en.wikipedia.org/w/index.php?title=Jewels_of_Elizabeth_II&oldid=564927638", 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:564927638, author = "{Wikipedia contributors}", title = "Jewels of Elizabeth II --- {Wikipedia}{,} The Free Encyclopedia", year = "2013", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=Jewels_of_Elizabeth_II&oldid=564927638}", note = "[Online; accessed 9-July-2024]" }