@book{ MAYORAL:156,

author = { ROBERTO MAYORAL ASENSIO } ,

title = { TRANSALTING OFFICIAL DOCUMENTS },

publisher = { SHANGAI FOREIGN LANGUAGES EDUCATION PRESS },

number = { 1 },

address = { SHANGHAI, REPÚBLICA POPULAR CHINA },

year = { 2008 },

pages = { 156 },

isbn = { 978-7-5446-08 },

}