Keller, J. E. (1978). Pious Brief Narrative in Medieval Castilian and Galician Verse: From Berceo to Alfonso X. The University Press of Kentucky.
Cita Chicago Style (17a ed.)Keller, John Esten. Pious Brief Narrative in Medieval Castilian and Galician Verse: From Berceo to Alfonso X. Lexington: The University Press of Kentucky, 1978.
Cita MLA (8a ed.)Keller, John Esten. Pious Brief Narrative in Medieval Castilian and Galician Verse: From Berceo to Alfonso X. The University Press of Kentucky, 1978.
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