It depends from which culture u want ur roti from?

The Caribbean one resembles and is known as a 'parotha', cooked on a griddle with oil or ghee, stuffed with spiced potato curry and / or meat, chicken or fish curry. Very easy to prepare.

The Indian one is known as a 'fulka' or 'chapati' or 'roti'. Cooked dry with no oil or butter.

As suggested earlier, check out the frozen section of ur ethnic grocer and u will find them there OR order them from ur local Indian restaurant.