Com licen'a! can be used in either regularly paced or highly intensive programs. Fred Ellison, professor of Portuguese at the University of Texas, says, "The like of Simoes' book, so fresh and inviting in its approaches, has not been seen before in our field."Simões, Antônio R. M. is the author of 'Com Licenca! Brazilian Portuguese for Spanish Speakers', published 1992 under ISBN 9780292711426 and ISBN 0292711425.