Pratten, C. (1976). Labour productivity differentials within international companies. C.U.P.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPratten, C.F. Labour Productivity Differentials Within International Companies. C.U.P, 1976.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPratten, C.F. Labour Productivity Differentials Within International Companies. C.U.P, 1976.
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