Just FYI this question is fine in /r/Spanish too. This subreddit is more for folks having problems with their homeworks, projects, etc.
Anyway, for starters, university/college names are usually "acronymized" (is that a word?) in Spanish, and this shortens the whole thing to a few letters, much like in English (Universidad Nacional Autónoma de México→UNAM; University of California, Los Angeles→UCLA).
According to its Wikipedia page, it can be abbreviated to UNALM, which solves your problem right away.
If you need a little more clarity, in case there's not much context that "ties" the acronym to a university in Peru, you may want to resort to abbreviations for each word.
So we have