@misc{ enwiki:1158096084, author = "{Wikipedia contributors}", title = "NGC 203 --- {Wikipedia}{,} The Free Encyclopedia", year = "2023", url = "https://en.wikipedia.org/w/index.php?title=NGC_203&oldid=1158096084", note = "[Online; accessed 13-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:1158096084, author = "{Wikipedia contributors}", title = "NGC 203 --- {Wikipedia}{,} The Free Encyclopedia", year = "2023", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=NGC_203&oldid=1158096084}", note = "[Online; accessed 13-July-2024]" }