Nouvelles Assyriologiques Breves et Utilitaires (NABU) is a periodical that publishes short notes (as the title says) four times a year. I've found it cited at least four or five different ways. A few years ago, I consulted SBL about how they recommended citing it. Because I can never remember how or where the email response is filed, I'm putting it here.
Obviously, you need to add NABU to the abbreviations list. Then cite it as Author. "Article title." NABU year.issue: pages, no. ###. E.g.,
Peker, Hasan. “Some Remarks on the Imperial Hittite Sealings from the 2017 Excavations at Karkemish.” NABU 2017.4:178–79, no. 101.
Some presses want you to include a link as well. In this case it is https://sepoa.fr/wp/wp-content/uploads/2018/01/NABU-_2017-4_DEF.pdf.
It would be really nice if NABU would start using DOIs, but meanwhile, we need to do it the long way.
Update (4/7/2023): Here's the link to a comprehensive list of NABU issues along with links to the PDFs of each issue. (I also updated the date of this post.)
Table of Contents for copyediting stuff.