@misc{ enwiki:1227755229, author = "{Wikipedia contributors}", title = "Child labour in the diamond industry --- {Wikipedia}{,} The Free Encyclopedia", year = "2024", url = "https://en.wikipedia.org/w/index.php?title=Child_labour_in_the_diamond_industry&oldid=1227755229", note = "[Online; accessed 20-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:1227755229, author = "{Wikipedia contributors}", title = "Child labour in the diamond industry --- {Wikipedia}{,} The Free Encyclopedia", year = "2024", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=Child_labour_in_the_diamond_industry&oldid=1227755229}", note = "[Online; accessed 20-June-2024]" }