Whitcomb, J. C. (1963). Darius the Mede. The Presbyterian and Reformed Publishing Company.
Lua i Stíl Chicago (17ú heag.)Whitcomb, John C. Darius the Mede. The Presbyterian and Reformed Publishing Company, 1963.
Lua MLA (9ú heag.)Whitcomb, John C. Darius the Mede. The Presbyterian and Reformed Publishing Company, 1963.
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