Hoyt, Robert S.
Europe in the middle ages
Harcourt, Brace & World, 1966
 Buku Teks SO
Erlande-Brandenburg, Alain
The cathedral builders of the middle ages
Thames and Hudson, [date of publication not identified]
 Buku Teks
Baring-Gould, Sabine
Curious myths of the middle ages
Longman, 1906
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The Middle Ages : a concise encyclopaedia
general editor, H.R. Loyn
Thames and Hudson, 1991
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Salzman, L.F.
English life in the middle ages
Oxford University Press, 1955
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