English: Coat of Arms of the Kingdom of Sicily (House of Hohenstaufen)
Date
Source
Bascapè, Giacomo C.; Marcello Del Piazzo, Luigi Borgia (1983) Insegne e simboli: araldica pubblica e privata medievale e moderna,
Rome: Pubblicazioni degli Archivi di Stato: Ministero per i beni culturali e ambientali Ufficio centrale per i beni archivistici, p. 1032
Vigueur, Jean-Claude Maire (1998), “Storia e leggenda di un grande imperatore”, in Medioevo Dossier – anno I, 1, Milan: De Agostini-Rizzoli Periodici, pages 31-38
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