@Book{BVMC:1048437, author = {Pacioli, Luca}, title = {Summa de arithmetica, geometria, proportioni et proportionalita. Nouamente impressa in Toscolano...}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2020}, year = {2020}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc1048437} }