I have written a letter of recommendation for a student who is applying to study abroad (we are in the USA, she is applying to study in Spain). The institution she is applying to requested that letters be submitted in Spanish; since I do not speak or write Spanish fluently, I asked a close friend (a native speaker of Spanish) to translate the letter for me.
My question is how to indicate this properly on the letter. My current plan is to add, just below my signature, the phrase "Traducido por ___________" and then the translator's name. Is that the right way to handle this, or is there something else I should be doing?