United States. Bureau of Labor Statistics, ebrary, Inc, & Ryan, M. M. (2011). Handbook of U.S. labor statistics: Employment, earnings, prices, productivity, and other labor data (14th ed., 2011.). Bernan Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited States. Bureau of Labor Statistics, Inc ebrary, और Mary Meghan Ryan. Handbook of U.S. Labor Statistics: Employment, Earnings, Prices, Productivity, and Other Labor Data. 14th ed., 2011. Lanham, MD: Bernan Press, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited States. Bureau of Labor Statistics, et al. Handbook of U.S. Labor Statistics: Employment, Earnings, Prices, Productivity, and Other Labor Data. 14th ed., 2011. Bernan Press, 2011.
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