@misc{ enwiki:1157940967, author = "{Wikipedia contributors}", title = "Ehrhardt 7.5 cm Model 1901 --- {Wikipedia}{,} The Free Encyclopedia", year = "2023", url = "https://en.wikipedia.org/w/index.php?title=Ehrhardt_7.5_cm_Model_1901&oldid=1157940967", note = "[Online; accessed 27-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:1157940967, author = "{Wikipedia contributors}", title = "Ehrhardt 7.5 cm Model 1901 --- {Wikipedia}{,} The Free Encyclopedia", year = "2023", howpublished = "\url{https://en.wikipedia.org/w/index.php?title=Ehrhardt_7.5_cm_Model_1901&oldid=1157940967}", note = "[Online; accessed 27-June-2024]" }