Spanish Dictionary + Thesaurus?

For my AP Spanish course, i am required to buy a spanish-english dictionary with a thesaurus as well. But i am having trouble finding an actual publication containing both a dictionary and a thesaurus.

Are there any specific titles, brands or companies that i can find?Spanish Dictionary + Thesaurus?
Go to any bookstore and ask for a spanish dictionary/thesauras. Most dictionaries now adays have a thesaurus, but it will say on the cover...