SAMPSON, R. J. (1983). The American Economy Analysis Issues Principles Roy J. Sampson And Ira Marienhoff. Houghton Mifflin Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSAMPSON, Roy J. The American Economy Analysis Issues Principles Roy J. Sampson And Ira Marienhoff. Houghton Mifflin Company, 1983.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSAMPSON, Roy J. The American Economy Analysis Issues Principles Roy J. Sampson And Ira Marienhoff. Houghton Mifflin Company, 1983.
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