Shea, J. G. (1910). Columbus and the Men of Palos and Boyhood of Columbus. S.l..
Lua i Stíl Chicago (17ú heag.)Shea, John Gilmary. Columbus and the Men of Palos and Boyhood of Columbus. S.l., 1910.
Lua MLA (8ú heag.)Shea, John Gilmary. Columbus and the Men of Palos and Boyhood of Columbus. S.l., 1910.
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