Guido, M. (1999). The glass beads of Anglo-Saxon England c. AD 400-700. Reports of the Research Committee of the Society of Antiquaries of London 58.
Παραπομπή Chicago StyleGuido, Margaret. "The Glass Beads of Anglo-Saxon England C. AD 400-700." Reports of the Research Committee of the Society of Antiquaries of London 58 1999.
Παραπομπή MLAGuido, Margaret. "The Glass Beads of Anglo-Saxon England C. AD 400-700." Reports of the Research Committee of the Society of Antiquaries of London 58 1999.
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