Minnen, C. A. v. (2005). Van Loon: Popular historian, journalist, and FDR confidant. Palgrave Macmillan.
Lua i Stíl Chicago (17ú heag.)Minnen, Cornelis A. van. Van Loon: Popular Historian, Journalist, and FDR Confidant. New York: Palgrave Macmillan, 2005.
Lua MLA (9ú heag.)Minnen, Cornelis A. van. Van Loon: Popular Historian, Journalist, and FDR Confidant. Palgrave Macmillan, 2005.
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