@book{243190,
	author = {Cicero, Marcus Tullius, and Samaranch, Francisco.},
	title = {Los deberes},
	publisher = {Editorial de la Universidad de Puerto Rico},
	year = {1983.},
	series = {Biblioteca de cultura básica},
	address = {San Juan},
	edition = {3. ed. ; reimpr 1983.},
	note = {Translation of De officiis.}
}