@book
{TN_libero_mab2,
author = {
Twain, Mark
Jacobi, Margarete
AND
Jacobi, Margarete
},
title = {
Mark Twain's ausgewählte Werke
},
publisher = {Hesse & Becker},
year = {19XX-},
address = {
Leipzig
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}