Luiso, F.P. Studi su l’epistolario di Leonardo Bruni, 1980: t.p. (Leonardo Bruni)
It80-Dec (Bruni, Leonardo)
GEV (Leonardo Bruni)
Encic. ital. index (Leonardo Bruni)
Leonardo Brunis Rede auf Nanni Strozzi, 1996: p. 15 (Leonardo Bruni, 1370-1444) p. 16 (b. 1370 in Arezzo)
Catalogue of medieval and Renaissance manuscripts in the Beinecke Rare Book and Manuscript Library, Yale University, 1992: v. 3, p. 24 (Leonardi Arretini ...)
Historia fiorentina, 1476: colophon (Messer Lionardo Aretino)
DBI (Bruni (Brunus, Bruno), Leonardo (Lionardo), called Leonardo Aretino; date of birth not definitely known, but according to some contemporaries it was 1370; d. 9 Mar. 1444)