Williams, H. L., & Williams, O. K. (1966). Great houses of America. Putnam.
Lua i Stíl Chicago (17ú heag.)Williams, Henry Lionel, agus Ottalie K. Williams. Great Houses of America. New York: Putnam, 1966.
Lua MLA (8ú heag.)Williams, Henry Lionel, agus Ottalie K. Williams. Great Houses of America. Putnam, 1966.
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