Welfens, P. J. J., & Addison, J. T. Innovation, employment and growth policy issues in the EU and the US.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWelfens, Paul J. J., और John T. Addison. Innovation, Employment and Growth Policy Issues in the EU and the US. Berlin, Heidelberg Springer-Verlag Berlin Heidelberg 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWelfens, Paul J. J., और John T. Addison. Innovation, Employment and Growth Policy Issues in the EU and the US.
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