APA-viite (7. p.)
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-viite (17. p.)
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-viite (9. p.)
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.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.