JSTOR Ref
Giles Constable Giraldus Cambrensis: Speculum Duorum or A Mirror of Two Men. (Board of Celtic Studies, University of Wales: History and Law Series, 27), by Yves Lefèvre, R. B. C. Huygens, Brian Dawson, Michael Richter 44.3 (1975), 284-287 DOI:10.2307/43628140
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