Heer, F. (1963). EL MUNDO MEDIEVAL (Europa (1100-1350). Guadarrama.
Chicago Style (17th ed.) CitationHeer, Friedrich. EL MUNDO MEDIEVAL (Europa (1100-1350). Madrid: Guadarrama, 1963.
MLA (9th ed.) CitationHeer, Friedrich. EL MUNDO MEDIEVAL (Europa (1100-1350). Guadarrama, 1963.
Warning: These citations may not always be 100% accurate.