APA-referens (7:e uppl.)
Fernández de Castro Cabeza, M. d. C. (1987). The life of the very noble King of Castile and León, Saint Ferdinand III. Foundation for a Christian Civilization.
Chicago-referens (17:e uppl.)
Fernández de Castro Cabeza, María del Carmen. The Life of the Very Noble King of Castile and León, Saint Ferdinand III. Mount Kisco, N.Y.: Foundation for a Christian Civilization, 1987.
MLA-referens (9:e uppl.)
Fernández de Castro Cabeza, María del Carmen. The Life of the Very Noble King of Castile and León, Saint Ferdinand III. Foundation for a Christian Civilization, 1987.
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