I recommend this thesaurus to not only internationals but also Americans as well. Maybe this thesaurus is not enough for deep readings and writings but I believe it will meet your most needs. I suggest you to use this thesaurus with a thick and broader thesaurus, in this way if you do not find an equivalent for a particular word in this one, you can easily refer to other big thesaurus. Other than that, the most useful feature of this thesaurus is that it has not only synonyms (which most thesauri only have) but also antonyms.