@Misc{BVMC:973599, author = {Ptolomeo, Claudio}, title = {Claudii Ptolemaei Alexandrini geograghicae enarrationis libri octo}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2019}, year = {2019}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc0973599} }