@Book{BVMC:280633, author = {Ciceró, Marc Tul·li}, title = {M.T. Ciceronis de Officiis liber primus. M.T. Ciceronis de Paradoxis liber. M.T. Ciceronis de Somno Scipionis alias de Republica liber sextus}, publisher = {Alacant : Biblioteca Virtual Miguel de Cervantes, 2011}, year = {2011}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc542x8} }