Rickaby, J. 1. M. (1911). The Modern Papacy. London.
Lua i Stíl Chicago (17ú heag.)Rickaby, Joseph 1845-1932; Morris. The Modern Papacy. London, 1911.
Lua MLA (8ú heag.)Rickaby, Joseph 1845-1932; Morris. The Modern Papacy. London, 1911.
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