Gordon, Ronni L . The ultimate Spanish verb review and practice : mastering verbs and sentence building for confident communication / Ronni L. Gordon and David M. Stillman - 1a ed. - New York : McGraw-Hill, 2006 - x, 308 p. ; 26 cm. Incluye índice ISBN: 0071416730 Subjects--Topical Terms: Español--Libros de texto--Verbos LC Class. No.: PC4271 / G67 2006