What is the accepted convention for citing resources not in the language of instruction?

I’ve done this before with Dutch and French sources and just cited it without comment, and got away with it, but those were a bunch of budget tables and census data, which aren’t the hardest thing to understand without speaking the language (and I don’t speak Dutch or French). Now I’m starting a GIS project using mostly Mexican government data that’s in Spanish, and this is a lot more complicated (in that I have a lot of descriptions of the points and polygons being mapped in my data that are written in Spanish). I do speak Spanish (if not particularly gracefully), so on my end this isn’t too bad. Thing is, the professor doesn’t speak it, and she said I should just translate anything directly shown in my maps and paper into English, while following the standard convention on citing data in other languages (which she doesn’t remember up the top of her head). So, what is the standard for this? Do you just cite it and move on, or do you need to provide some sort of comment?