Clay, R. M. (1909). The mediaeval hospitals of England. Methuen & co.
Lua i Stíl Chicago (17ú heag.)Clay, Rotha Mary. The Mediaeval Hospitals of England. London: Methuen & co, 1909.
Lua MLA (8ú heag.)Clay, Rotha Mary. The Mediaeval Hospitals of England. Methuen & co, 1909.
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