On the social origins of medieval institutions

Alfonso X, the Justinian of His Age

Reconquest and crusade in medieval Spain

Chronicle of Alfonso X

The Last Crusade in the West

The Gibraltar Crusade

Electing our bishops

The Latin Chronicle of the Kings of Castile (Medieval & Renaissance Texts & Studies (Series), V. 236)

The learned king

A history of medieval Spain

Cortes of Castile-Leon, 1188-1350