Αλφόνσος Η΄ της Καστίλης: Διαφορά μεταξύ των αναθεωρήσεων

*Chisholm, Hugh, ed. (1911). "Alphonso". Encyclopædia Britannica (11th ed.). Cambridge University Press.

*COSTA, Ricardo da. "Love and Crime, Chastisement and Redemption in Glory in the Crusade of Reconquest: Alfonso VIII of Castile in the battles of Alarcos (1195) and Las Navas de Tolosa (1212)". In: OLIVEIRA, Marco A. M. de (org.). Guerras e Imigrações. Campo Grande: Editora da UFMS, 2004, p. 73-94 (ISBN 85-7613-023-8).

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