Pfaff, L. (1989). The American and German entrepreneur: Economic and literary interplay. Lang.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPfaff, Lucie. The American and German Entrepreneur: Economic and Literary Interplay. New York [u.a.]: Lang, 1989.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPfaff, Lucie. The American and German Entrepreneur: Economic and Literary Interplay. Lang, 1989.
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