@misc{ enwiki:1208731806, author = "{Wikipedia contributors}", title = "List of Christians martyred during the reign of Diocletian --- {Wikipedia}{,} The Free Encyclopedia", year = "2024", url = "https://en.wikipedia.org/w/index.php?title=List_of_Christians_martyred_during_the_reign_of_Diocletian&oldid=1208731806", note = "[Online; accessed 19-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:1208731806, author = "{Wikipedia contributors}", title = "List of Christians martyred during the reign of Diocletian --- {Wikipedia}{,} The Free Encyclopedia", year = "2024", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=List_of_Christians_martyred_during_the_reign_of_Diocletian&oldid=1208731806}", note = "[Online; accessed 19-July-2024]" }