O'Callaghan, J. F. (1998). Alfonso X and the "Cantigas de Santa Maria": A poetic biography. Brill.
Chicago Style (17th ed.) CitationO'Callaghan, Joseph F. Alfonso X and the "Cantigas De Santa Maria": A Poetic Biography. Leiden [u.a.]: Brill, 1998.
MLA (9th ed.) CitationO'Callaghan, Joseph F. Alfonso X and the "Cantigas De Santa Maria": A Poetic Biography. Brill, 1998.
Warning: These citations may not always be 100% accurate.