Cohen, W. M., Nelson, R. R., & Walsh, J. P. (2000). Protecting their intellectual assets: Appropriability conditions and why U.S. manufacturing firms patent(or not). National Bureau of Economic Research.
Style de citation Chicago (17e éd.)Cohen, Wesley M., Richard R. Nelson, et John P. Walsh. Protecting Their Intellectual Assets: Appropriability Conditions and Why U.S. Manufacturing Firms Patent(or Not). Cambridge: National Bureau of Economic Research, 2000.
Style de citation MLA (9e éd.)Cohen, Wesley M., et al. Protecting Their Intellectual Assets: Appropriability Conditions and Why U.S. Manufacturing Firms Patent(or Not). National Bureau of Economic Research, 2000.
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