American Academy of Political and Social Science, Philadelphia. (1903). Current labor problems. s.n.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmerican Academy of Political and Social Science, Philadelphia. Current Labor Problems. Philadelphia: s.n, 1903.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAmerican Academy of Political and Social Science, Philadelphia. Current Labor Problems. s.n, 1903.
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