Gibbons, J. (1898). Episcopal seal, From: James Gibbon, Archbishop of Baltimore, May 30, 1898.
Lua i Stíl Chicago (17ú heag.)Gibbons, James. Episcopal Seal, From: James Gibbon, Archbishop of Baltimore, May 30, 1898. 1898.
Lua MLA (8ú heag.)Gibbons, James. Episcopal Seal, From: James Gibbon, Archbishop of Baltimore, May 30, 1898. 1898.
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