Knapp, A. One thousand dollars a day. Studies in practical economics.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKnapp, Adeline. One Thousand Dollars a Day. Studies in Practical Economics.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKnapp, Adeline. One Thousand Dollars a Day. Studies in Practical Economics.
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