The proper name and most common name is Farsi. Brittanica refers to "Farsi", not Persian. Lonely Planet and Collins Gem publish "Farsi" phrase books. Oxford publishes an English-"Farsi" dictionary. The International Bible Society publishes a "Farsi" bible. "FarsiNet
?" is a major Iranian website. Even the damn Scientologists have "farsi.dianetics.org". I think that's pretty conclusive. -
MMGB