@Misc{BVMC:884905, author = {Trithemius, Johannes}, title = {Polygraphiae libri sex Ioannis Trithemii abbatis Peapolitani ...}, url = {https://www.cervantesvirtual.com/obra/polygraphiae-libri-sex-ioannis-trithemii-abbatis-peapolitani-884905} }