Daugherty, C. R. (1938). Labor problems in American industry (Rev. ed.). Houghton Mifflin company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDaugherty, Carroll R. Labor Problems in American Industry. Rev. ed. Boston: Houghton Mifflin company, 1938.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDaugherty, Carroll R. Labor Problems in American Industry. Rev. ed. Houghton Mifflin company, 1938.
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