Darby, J., & Wren-Lewis, S. (1992). Changing Trends in International Manufacturing Productivity.
Lua i Stíl Chicago (17ú heag.)Darby, J., agus S. Wren-Lewis. Changing Trends in International Manufacturing Productivity. 1992.
Lua MLA (9ú heag.)Darby, J., agus S. Wren-Lewis. Changing Trends in International Manufacturing Productivity. 1992.
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