English File : B1 Intermediate : Student's Book and Workbook : with online practice for speakers of Spanish / Christina Latham-Koenig, Clive Oxenden, Jerry Lambert ; with Jane Hudson. -- 4th ed. -- Oxford : Oxford University Press, 2019. -- 239 p. + 1 h. de clave de acceso, Entry Checker (31 p.), Workbook answer key (9 p.)
