Kniffel, L. (2005). A Polish son in the motherland: An American's journey home. Texas A & M University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKniffel, Leonard. A Polish Son in the Motherland: An American's Journey Home. College Station: Texas A & M University Press, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKniffel, Leonard. A Polish Son in the Motherland: An American's Journey Home. Texas A & M University Press, 2005.
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