MAZZARESE FARDELLA, E. Federico II e il "Regnum Siciliae". Annali dell’Istituto storico italo-germanico in Trento = Jahrbuch des italienisch-deutschen historischen Instituts in Trient, [S. l.], v. 1, p. 25–49, 1975. Disponível em: https://heyjoe.fbk.eu/index.php/anisig/article/view/17. Acesso em: 11 mag. 2026.