Barraclough, G. (1936). The Chancery Ordinance of Nicholas III, a Study of the Sources: By Geoffrey Barraclough. Regenberg.
Lua i Stíl Chicago (17ú heag.)Barraclough, Geoffrey. The Chancery Ordinance of Nicholas III, a Study of the Sources: By Geoffrey Barraclough. Rom: Regenberg, 1936.
Lua MLA (8ú heag.)Barraclough, Geoffrey. The Chancery Ordinance of Nicholas III, a Study of the Sources: By Geoffrey Barraclough. Regenberg, 1936.
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