author = { Bode, Gabriele AND Achterholt, Ralf },

title = { "Nos referimos a su carta ..." Lehrbuch },

edition = { 4., überarb. Aufl. } ,

publisher = {Feldhaus},

isbn = {3882641614},

year = {1993},

address = { Hamburg },

url = { http://slubdd.de/katalog?TN_libero_mab2 }