@Book{BDCM20215414959, title = "Curso elemental de lengua inglesa : primera parte", author = "Kelly, Brian", publisher = "Madrid : Editorial Hisp\'{a}nica", editor = "Editorial Hisp\'{a}nica", URL = "https://bibliotecavirtualmadrid.comunidad.madrid/bvmadrid_publicacion/es/consulta/registro.do?id=581253", year = "1946", }