@Book{BVMC:222512,
author = {Petrarca, Francesco},
title = {"Lletra feta per Petrarcha"},
publisher = {Alacant : Biblioteca Virtual Joan Lluís Vives, 2003},
year = {2003},
url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc47477}
}