what journal and what publishing house. There are other criteria that are needed to know, to answer this. Is it numbered or author, year in citations for example, but there are many more.
I know as a new participant, it is hard to post a URL (to prevent spammers), so anything that helps find the instructions can help us point you in the right direction.
Oh, and the abbreviation part needs a “Journal terms list” - see https://support.clarivate.com/Endnote/s/article/EndNote-Generate-full-or-abbreviated-journal-names?language=en_US